| Directions: In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number. [SBI (PO) 2011] |
| 2, 8, 12, 20, 30, 42, 56 |
A) 8
B) 42
C) 30
D) 20
E) 12
Correct Answer: A
Solution :
| \[2+4=6\ne 8\]\[\Rightarrow \]\[6+6=12\] |
| \[12+8=42\]\[\Rightarrow \]\[20+10=30\] |
| \[30+12=42\]\[\Rightarrow \]\[42+14=56\] |
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