AFCAT Reasoning & Logical Thinking

Question 1

What comes next in the series: 2, 4, 8, 16, ?

Accepted Answer

32

Answer

This is a geometric progression where each number is obtained by multiplying the previous number by 2. The series follows the pattern of powers of 2: 2^1, 2^2, 2^3, 2^4. Therefore, the next number is 2^5, which is 16 * 2 = 32.

Question 2

If in a code, TABLE is written as GZOVI, how is CHAIR written?

Accepted Answer

XZSIR

Answer

The coding pattern used here is an alphabetical reversal, where each letter is replaced by its corresponding letter from the opposite end of the alphabet (A=Z, B=Y, C=X, etc.). Applying this pattern to CHAIR: C becomes X, H becomes S, A becomes Z, I becomes R, and R becomes I. Thus, CHAIR is coded as XZSIR.

Question 3

Which number is the odd one out: 3, 5, 7, 9, 11?

Accepted Answer

9

Answer

The series 3, 5, 7, 9, 11 consists of odd numbers. However, 3, 5, 7, and 11 are all prime numbers (divisible only by 1 and themselves). The number 9 is an odd number, but it is not a prime number as it is divisible by 3 (9 = 3 * 3), making it the odd one out.

Question 4

Find the missing number: 4, 9, 16, 25, ?

Accepted Answer

36

Answer

This series consists of perfect squares of consecutive integers. The numbers are 2^2=4, 3^2=9, 4^2=16, and 5^2=25. Following this pattern, the next number in the series would be the square of the next integer, which is 6^2. Therefore, 6 * 6 = 36.

Question 5

Which direction will you face if you start facing east and turn 270° clockwise?

Accepted Answer

North

Answer

Starting facing East, a 90° clockwise turn leads to South. Another 90° (total 180°) clockwise turn from South leads to West. A third 90° (total 270°) clockwise turn from West leads to North. Therefore, after turning 270° clockwise from East, you will be facing North.

(AFCAT) Air Force Common Admission Test Practice Test

(AFCAT) Air Force Common Admission Test Practice Test

AFCAT Reasoning & Logical Thinking