Series & Patterns

123 questions available

FILTER BY SUBTOPIC

All Number Series 105 Letter Series 4 Alphanumeric Series 11 Missing Terms 3 Pattern Recognition
Showing 121–123 of 123

Q121.Find the missing term of the following series: DCXW, HGTS, __________, POLK, TSHG

Medium
A LKOP
B LKPO
C KLOP
D KLPO
Number Series PPSC

Correct Answer: B

The series consists of pairs of consecutive letters in reverse alphabetical order: DC, XW (backward from X); HG, TS (backward from T). The next group must be LK, PO (backward from P) which is LKPO.

Q122.Complete the series: 5, 9, 17, 33, ?, 129, 257

Medium
A 64
B 63
C 66
D 65
Number Series PPSC

Correct Answer: D

Each term in the series is formed by multiplying the previous term by 2 and subtracting 1: (5 * 2) - 1 = 9, (9 * 2) - 1 = 17, (17 * 2) - 1 = 33. The missing term is (33 * 2) - 1 = 65.

Q123.What comes next in the pattern: 1, 4, 9, 16, 25, 36, 49, ________?

Medium
A 32
B 65
C 64
D 48
Number Series PPSC

Correct Answer: C

The series consists of squares of consecutive natural numbers: 1^2=1, 2^2=4, 3^2=9, 4^2=16, 5^2=25, 6^2=36, 7^2=49. The next term is 8^2 = 64.