GCAT Number and Letter Sequences 5

Question 1

What number is next? 3, 9, 27, 81, ___

Accepted Answer

243

Answer

Each term is multiplied by 3 (powers of 3), so 81 × 3 = 243.

Question 2

Which letter continues? C, F, I, L, O, ___

Accepted Answer

R

Answer

Each letter advances 3 positions, so O + 3 = R.

Question 3

What is missing? 50, 44, 38, 32, ___, 20

Accepted Answer

26

Answer

Each term decreases by 6, so 32 − 6 = 26.

Question 4

Complete this alternating sequence: 2, A, 4, C, 6, E, 8, ___

Accepted Answer

G

Answer

The letters follow every other letter of the alphabet (A, C, E, G…), so the next letter is G.

Question 5

What number comes next? 1, 2, 4, 7, 11, 16, ___

Accepted Answer

22

Answer

Differences increase by 1 each step (+1,+2,+3,+4,+5,+6), so 16 + 6 = 22.

GCAT - General Cognitive Ability Test Practice Test