IBEW Aptitude Number Series Question and Answers 3

Question 1

Complete the series: 7, 14, 21, 28, 35, ___

Accepted Answer

42

Answer

This is the 7 times table: each term increases by 7. 35 + 7 = 42.

Question 2

What is the next term: 256, 64, 16, 4, ___?

Accepted Answer

1

Answer

Each term is divided by 4: 256÷4=64, 64÷4=16, 16÷4=4, 4÷4=1.

Question 3

Find the missing number: 3, 7, 15, 31, 63, ___

Accepted Answer

127

Answer

Each term is doubled and 1 added: 3×2+1=7, 7×2+1=15, 15×2+1=31, 31×2+1=63, 63×2+1=127.

Question 4

What comes next: 1, 4, 9, 16, 25, 36, ___?

Accepted Answer

49

Answer

These are perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36, 7²=49.

Question 5

Complete the pattern: 50, 45, 41, 38, 36, ___

Accepted Answer

35

Answer

Differences: -5, -4, -3, -2, next is -1. So 36 - 1 = 35.

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