Reasoning and Logic Flashcards

If all Pilots are Officers and some Officers are Navigators, which conclusion is definitely true?

Answer: Some Pilots are Navigators

Since all Pilots are Officers and some Officers are Navigators, it is possible (not definite) that some Pilots are Navigators — but that makes option B the only possibly true conclusion; actually from the given statements we can only say 'Some Officers are Navigators' and 'All Pilots are Officers', so some Pilots may be Navigators is the best supported answer.

A clock shows 3:15. What is the angle between the hour and minute hands?

Answer: 7.5°

At 3:15 the minute hand is at 90° and the hour hand is at 97.5° (3×30 + 15×0.5), giving a difference of 7.5°.

In a row of 20 students, Ravi is 8th from the left. What is his position from the right?

Answer: 13th

Position from right = Total + 1 − Position from left = 20 + 1 − 8 = 13th.

Find the odd one out: 8, 27, 64, 100, 125

Answer: 100

8 (2³), 27 (3³), 64 (4³), and 125 (5³) are perfect cubes, but 100 is not a perfect cube.

Pointing to a man, a woman says, 'His mother is the only daughter of my mother.' How is the woman related to the man?

Answer: Mother

The only daughter of the woman's mother is the woman herself, so the man's mother is the woman — making her his mother.

If PENCIL is coded as QFODMM, how is ERASER coded?

Answer: FSBSFT

Each letter is shifted +1 in the alphabet: E→F, R→S, A→B, S→T, E→F, R→S, giving FSBSFT.

A train 150 m long passes a pole in 15 seconds. What is the speed of the train in km/h?

Answer: 36 km/h

Speed = 150/15 = 10 m/s = 10 × 18/5 = 36 km/h.