Directions (1 – 5): In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.

Q1. 3, 7, 23, 59, 123, 221, 367
(a) 367
(b) 23
(c) 3
(d) 221
(e) 7

Q2. 8, 5, 7, 18, 80, 656, 10532
(a) 656
(b) 8
(c) 5
(d) 7
(e) 10532

Q3. 56, 70, 96, 154, 266, 490, 938
(a) 266
(b) 96
(c) 490
(d) 70
(e) 154

Q4. 132, 130, 126, 118, 102, 70, 8
(a) 70
(b) 130
(c) 8
(d) 126
(e) 132

Q5. 7, 21, 53, 101, 165, 245, 341
(a) 245
(b) 7
(c) 341
(d) 21
(e) 53

Solutions