PSEE Number Series 2

Question 1

What is the next number in the series? 3, 6, 12, 24, 48, ___

Accepted Answer

96

Answer

Each term doubles: 3×2=6, 6×2=12, ..., 48×2=96.

Question 2

What number completes the series? 100, 91, 82, 73, 64, ___

Accepted Answer

55

Answer

Each term decreases by 9: 100−9=91, ..., 64−9=55.

Question 3

Find the missing number: 2, 5, 11, 23, 47, ___

Accepted Answer

95

Answer

Each term = previous × 2 + 1: 47×2+1=95.

Question 4

What is the next term? 1, 1, 2, 3, 5, 8, 13, ___

Accepted Answer

21

Answer

This is the Fibonacci sequence: each term = sum of the two preceding terms. 8+13=21.

Question 5

Identify the next number: 4, 9, 16, 25, 36, ___

Accepted Answer

49

Answer

These are perfect squares: 2²=4, 3²=9, ..., 6²=36, 7²=49.

PSEE - Public Service Entrance Exam Practice Test