Free MCQs with Answers | Military Brat Defence Academy

Q: What is the remainder when 7^103 is divided by 6?

Correct Answer: B. 1. Since 7 ≡ 1 mod 6, every positive power leaves remainder 1.

Q: Pipe A fills a tank in 20 minutes and pipe B empties it in 30 minutes. If both are opened together, the tank will fill in:

Correct Answer: C. 60 minutes. Net rate = 1/20 − 1/30 = 1/60, so the tank fills in 60 minutes.

Q: A vehicle increases its speed by 20%. By what percentage does the time taken for the same distance decrease?

Correct Answer: A. 16⅔%. New time = old time/1.2 = 5/6, a decrease of 1/6 = 16⅔%.

Q: If 3/5 of a number is 42, the number is:

Correct Answer: C. 70. Number = 42×5/3 = 70.

Q: The least number exactly divisible by 12, 15 and 18 is:

Correct Answer: C. 180. LCM of 12, 15 and 18 is 180.

Q: How many litres of water must be added to 30 litres of a 40% salt solution to make it a 30% solution?

Correct Answer: B. 10 litres. Salt = 12 litres. Final volume for 30% = 40 litres, so add 10 litres.

Q: The area of a circle is 154 cm². Using π = 22/7, its radius is:

Correct Answer: B. 7 cm. r² = 154×7/22 = 49, so r = 7 cm.

Q: If 3x − 7 = 2x + 9, then x equals:

Correct Answer: B. 16. 3x−2x = 9+7, so x=16.

Q: A device is marked 25% above cost price and sold at a discount of 10% on marked price. What is the profit percentage?

Correct Answer: B. 12.5%. Selling price = 1.25×0.90 = 1.125 of cost, giving 12.5% profit.

Q: A sum amounts to ₹13,000 in 3 years at 10% simple interest per annum. What is the principal?

Correct Answer: B. ₹10,000. Amount = P(1 + 0.10 × 3) = 1.3P; therefore P = ₹13,000/1.3 = ₹10,000.

QID #13498 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

What is the remainder when 7^103 is divided by 6?

Correct Answer: B. 1
Since 7 ≡ 1 mod 6, every positive power leaves remainder 1.

Question: What is the remainder when 7^103 is divided by 6?

A. 0

B. 1

C. 5

D. 6

Correct Answer: B. 1Explanation: Since 7 ≡ 1 mod 6, every positive power leaves remainder 1.

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QID #13497 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

Pipe A fills a tank in 20 minutes and pipe B empties it in 30 minutes. If both are opened together, the tank will fill in:

Correct Answer: C. 60 minutes
Net rate = 1/20 − 1/30 = 1/60, so the tank fills in 60 minutes.

Question: Pipe A fills a tank in 20 minutes and pipe B empties it in 30 minutes. If both are opened together, the tank will fill in:

A. 40 minutes

B. 50 minutes

C. 60 minutes

D. 75 minutes

Correct Answer: C. 60 minutesExplanation: Net rate = 1/20 − 1/30 = 1/60, so the tank fills in 60 minutes.

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QID #13496 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Hard

A vehicle increases its speed by 20%. By what percentage does the time taken for the same distance decrease?

Correct Answer: A. 16⅔%
New time = old time/1.2 = 5/6, a decrease of 1/6 = 16⅔%.

Question: A vehicle increases its speed by 20%. By what percentage does the time taken for the same distance decrease?

A. 16⅔%

B. 18%

C. 20%

D. 25%

Correct Answer: A. 16⅔%Explanation: New time = old time/1.2 = 5/6, a decrease of 1/6 = 16⅔%.

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QID #13495 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

If 3/5 of a number is 42, the number is:

Correct Answer: C. 70
Number = 42×5/3 = 70.

Question: If 3/5 of a number is 42, the number is:

A. 60

B. 65

C. 70

D. 75

Correct Answer: C. 70Explanation: Number = 42×5/3 = 70.

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QID #13494 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

The least number exactly divisible by 12, 15 and 18 is:

Correct Answer: C. 180
LCM of 12, 15 and 18 is 180.

Question: The least number exactly divisible by 12, 15 and 18 is:

A. 90

B. 120

C. 180

D. 360

Correct Answer: C. 180Explanation: LCM of 12, 15 and 18 is 180.

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QID #13493 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

How many litres of water must be added to 30 litres of a 40% salt solution to make it a 30% solution?

Correct Answer: B. 10 litres
Salt = 12 litres. Final volume for 30% = 40 litres, so add 10 litres.

Question: How many litres of water must be added to 30 litres of a 40% salt solution to make it a 30% solution?

A. 8 litres

B. 10 litres

C. 12 litres

D. 15 litres

Correct Answer: B. 10 litresExplanation: Salt = 12 litres. Final volume for 30% = 40 litres, so add 10 litres.

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QID #13492 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

The area of a circle is 154 cm². Using π = 22/7, its radius is:

Correct Answer: B. 7 cm
r² = 154×7/22 = 49, so r = 7 cm.

Question: The area of a circle is 154 cm². Using π = 22/7, its radius is:

A. 5 cm

B. 7 cm

C. 9 cm

D. 11 cm

Correct Answer: B. 7 cmExplanation: r² = 154×7/22 = 49, so r = 7 cm.

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QID #13491 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

If 3x − 7 = 2x + 9, then x equals:

Correct Answer: B. 16
3x−2x = 9+7, so x=16.

Question: If 3x − 7 = 2x + 9, then x equals:

A. 14

B. 16

C. 18

D. 20

Correct Answer: B. 16Explanation: 3x−2x = 9+7, so x=16.

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QID #13490 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

A device is marked 25% above cost price and sold at a discount of 10% on marked price. What is the profit percentage?

Correct Answer: B. 12.5%
Selling price = 1.25×0.90 = 1.125 of cost, giving 12.5% profit.

Question: A device is marked 25% above cost price and sold at a discount of 10% on marked price. What is the profit percentage?

A. 10%

B. 12.5%

C. 15%

D. 17.5%

Correct Answer: B. 12.5%Explanation: Selling price = 1.25×0.90 = 1.125 of cost, giving 12.5% profit.

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QID #13489 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Hard

A sum amounts to ₹13,000 in 3 years at 10% simple interest per annum. What is the principal?

Correct Answer: B. ₹10,000
Amount = P(1 + 0.10 × 3) = 1.3P; therefore P = ₹13,000/1.3 = ₹10,000.

Question: A sum amounts to ₹13,000 in 3 years at 10% simple interest per annum. What is the principal?

A. ₹9,000

B. ₹10,000

C. ₹10,500

D. ₹11,000

Correct Answer: B. ₹10,000Explanation: Amount = P(1 + 0.10 × 3) = 1.3P; therefore P = ₹13,000/1.3 = ₹10,000.

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QID #13488 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Hard

A jet covers 900 km at 600 km/h and returns the same distance at 450 km/h. What is its average speed for the entire trip?

Correct Answer: C. 514.29 km/h
For equal distances, average speed = 2ab/(a+b) = 2×600×450/1050 = 514.29 km/h.

Question: A jet covers 900 km at 600 km/h and returns the same distance at 450 km/h. What is its average speed for the entire trip?

A. 500 km/h

B. 510 km/h

C. 514.29 km/h

D. 525 km/h

Correct Answer: C. 514.29 km/hExplanation: For equal distances, average speed = 2ab/(a+b) = 2×600×450/1050 = 514.29 km/h.

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QID #13487 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

The average of five numbers is 48. If one number is removed, the average of the remaining four becomes 44. What is the removed number?

Correct Answer: C. 64
Removed number = 5×48 − 4×44 = 240 − 176 = 64.

Question: The average of five numbers is 48. If one number is removed, the average of the remaining four becomes 44. What is the removed number?

A. 56

B. 60

C. 64

D. 68

Correct Answer: C. 64Explanation: Removed number = 5×48 − 4×44 = 240 − 176 = 64.

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QID #13486 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

A can complete a task in 12 days and B in 18 days. Working together, in how many days will they complete it?

Correct Answer: B. 7.2 days
Combined rate = 1/12 + 1/18 = 5/36, so time = 36/5 = 7.2 days.

Question: A can complete a task in 12 days and B in 18 days. Working together, in how many days will they complete it?

A. 6.2 days

B. 7.2 days

C. 8 days

D. 9 days

Correct Answer: B. 7.2 daysExplanation: Combined rate = 1/12 + 1/18 = 5/36, so time = 36/5 = 7.2 days.

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QID #13485 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

The ratio of officers to airmen in a unit is 3:20. If there are 460 personnel in all, how many are officers?

Correct Answer: B. 60
Total parts = 23; each part = 20; officers = 3 × 20 = 60.

Question: The ratio of officers to airmen in a unit is 3:20. If there are 460 personnel in all, how many are officers?

A. 45

B. 60

C. 75

D. 80

Correct Answer: B. 60Explanation: Total parts = 23; each part = 20; officers = 3 × 20 = 60.

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QID #13484 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

An aircraft's fuel load is reduced from 12,500 kg to 10,625 kg. What is the percentage reduction?

Correct Answer: B. 15%
Reduction = 1,875 kg; percentage = 1,875/12,500 × 100 = 15%.

Question: An aircraft's fuel load is reduced from 12,500 kg to 10,625 kg. What is the percentage reduction?

A. 12%

B. 15%

C. 17.5%

D. 18%

Correct Answer: B. 15%Explanation: Reduction = 1,875 kg; percentage = 1,875/12,500 × 100 = 15%.

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QID #13483 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

The briefing was concise, _____ it covered every essential point.

Correct Answer: B. yet
'Yet' correctly expresses contrast between brevity and completeness.

Question: The briefing was concise, _____ it covered every essential point.

A. because

B. yet

C. unless

D. whereas

Correct Answer: B. yetExplanation: 'Yet' correctly expresses contrast between brevity and completeness.

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QID #13482 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

Identify the error: 'One of the candidates have submitted an incomplete form.'

Correct Answer: C. have submitted
The subject 'one' is singular, so the verb should be 'has submitted'.

Question: Identify the error: 'One of the candidates have submitted an incomplete form.'

A. One of

B. the candidates

C. have submitted

D. an incomplete form

Correct Answer: C. have submittedExplanation: The subject 'one' is singular, so the verb should be 'has submitted'.

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QID #13481 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Medium

To 'keep one's powder dry' means to:

Correct Answer: B. Remain ready for action
The phrase means to remain alert and prepared.

Question: To 'keep one's powder dry' means to:

A. Avoid all preparation

B. Remain ready for action

C. Waste available resources

D. Conceal a mistake

Correct Answer: B. Remain ready for actionExplanation: The phrase means to remain alert and prepared.

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QID #13480 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

Choose the correct conditional sentence.

Correct Answer: C. If the visibility improves, the aircraft will depart.
The first conditional uses present simple in the if-clause and 'will' in the main clause.

Question: Choose the correct conditional sentence.

A. If the visibility improves, the aircraft would depart.

B. If the visibility improved, the aircraft will depart.

C. If the visibility improves, the aircraft will depart.

D. If the visibility will improve, the aircraft departs.

Correct Answer: C. If the visibility improves, the aircraft will depart.Explanation: The first conditional uses present simple in the if-clause and 'will' in the main clause.

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QID #13479 AFCAT 02/2026 Mock Test Series - Attempt Online Tests AFCAT 2026 Full-Length Mock Test 3 Easy

The word 'inadvertent' means:

Correct Answer: B. Unintentional
Inadvertent means not resulting from or achieved through deliberate planning.

Question: The word 'inadvertent' means:

A. Deliberate

B. Unintentional

C. Hostile

D. Immediate

Correct Answer: B. UnintentionalExplanation: Inadvertent means not resulting from or achieved through deliberate planning.

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Free MCQs with Answers | Military Brat Defence Academy

What is the remainder when 7^103 is divided by 6?

Pipe A fills a tank in 20 minutes and pipe B empties it in 30 minutes. If both are opened together, the tank will fill in:

A vehicle increases its speed by 20%. By what percentage does the time taken for the same distance decrease?

If 3/5 of a number is 42, the number is:

The least number exactly divisible by 12, 15 and 18 is:

How many litres of water must be added to 30 litres of a 40% salt solution to make it a 30% solution?

The area of a circle is 154 cm². Using π = 22/7, its radius is:

If 3x − 7 = 2x + 9, then x equals:

A device is marked 25% above cost price and sold at a discount of 10% on marked price. What is the profit percentage?

A sum amounts to ₹13,000 in 3 years at 10% simple interest per annum. What is the principal?

A jet covers 900 km at 600 km/h and returns the same distance at 450 km/h. What is its average speed for the entire trip?

The average of five numbers is 48. If one number is removed, the average of the remaining four becomes 44. What is the removed number?

A can complete a task in 12 days and B in 18 days. Working together, in how many days will they complete it?

The ratio of officers to airmen in a unit is 3:20. If there are 460 personnel in all, how many are officers?

An aircraft's fuel load is reduced from 12,500 kg to 10,625 kg. What is the percentage reduction?

The briefing was concise, _____ it covered every essential point.

Identify the error: 'One of the candidates have submitted an incomplete form.'

To 'keep one's powder dry' means to:

Choose the correct conditional sentence.

The word 'inadvertent' means:

Free MCQs with Answers and Explanations