Reasoning & Logical Thinking Flashcards

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

Answer: 32

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.

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

Answer: XZSIR

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.

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

Answer: 9

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.

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

Answer: 36

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.

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

Answer: North

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.

Ravi is taller than Mohan but shorter than Ajay. Who is the tallest?

Answer: Ajay

The problem states that Ravi is taller than Mohan (R > M) but shorter than Ajay (A > R). Combining these two statements, we get the order Ajay > Ravi > Mohan. Therefore, Ajay is the tallest among the three.

Which word is different from the rest?

Answer: Carrot

Apple, Mango, and Banana are all types of fruits. Carrot, on the other hand, is a root vegetable. This difference in category makes Carrot the odd one out among the given options.

If ‘ACE’ = 9, ‘BDF’ = ?

Answer: 12

The pattern involves assigning numerical values to letters based on their alphabetical position (A=1, B=2, C=3, etc.) and then summing these values. For 'ACE', A=1, C=3, E=5, so 1+3+5 = 9. Applying the same logic to 'BDF', B=2, D=4, F=6, which sums up to 2+4+6 = 12.

Which figure is different: Circle, Square, Rectangle, Triangle?

Answer: Circle

Square, Rectangle, and Triangle are all polygons, meaning they are closed figures made up of straight line segments. A Circle, however, is a curved shape with no straight sides or angles. This fundamental geometric difference makes the Circle unique among the options.