GCAT Number and Letter Sequences 3

Question 1

What is missing? 5, 10, 20, ___, 80, 160

Accepted Answer

40

Answer

Each term is multiplied by 2, so 20 × 2 = 40.

Question 2

Which letter is next? A, C, F, J, O, ___

Accepted Answer

U

Answer

The gaps increase by 1 each step (+2, +3, +4, +5, +6), so O + 6 = U.

Question 3

What number fills the blank? 81, 27, 9, 3, ___

Accepted Answer

1

Answer

Each term is divided by 3, so 3 ÷ 3 = 1.

Question 4

Identify the next term: A1, B2, C3, D4, ___

Accepted Answer

E5

Answer

The letter advances by one and the number increases by one, giving E5.

Question 5

What comes next? 7, 14, 21, 28, 35, ___

Accepted Answer

42

Answer

These are multiples of 7, so the next term is 7 × 6 = 42.

GCAT - General Cognitive Ability Test Practice Test