PSEE Number Series 3

Question 1

Find the next term: 7, 14, 28, 56, ___

Accepted Answer

112

Answer

Each term doubles: 56×2=112.

Question 2

What is the missing number? 3, 7, 15, 31, ___, 127

Accepted Answer

63

Answer

Each term = previous × 2 + 1: 31×2+1=63, 63×2+1=127.

Question 3

What comes next in the series? 1, 4, 9, 16, 25, 36, 49, ___

Accepted Answer

64

Answer

Perfect squares: 1², 2², ..., 7²=49, 8²=64.

Question 4

Complete the series: 5, 10, 20, 35, 55, ___

Accepted Answer

80

Answer

Differences: +5, +10, +15, +20 — increasing by 5 each step. Next difference: +25. 55+25=80.

Question 5

What is the next number? 2, 6, 18, 54, ___

Accepted Answer

162

Answer

Each term is multiplied by 3: 54×3=162.

PSEE - Public Service Entrance Exam Practice Test