Direction: In each of the following questions a number series is given. A number is given after the series and then (a), (b), (c), (d) and (e) are given. According to the given series, you have to form a new series which begins with the given number, and then answer the question asked.
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3 10 32 111 460 2315 2 (a) (b) (c) (d) (e) Which of the following numbers will come in place of (b) ?
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- 29
- 30
- 26
- 28
- None of these
Correct Option: B
The given series is in the below pattern ,
First series :-
First term = 3
Second term = First term × 1 + 7 × 1
⇒ Second term = 3 × 1 + 7 × 1 = 3 + 7 = 10
Third term = Second term × 2 + 6 × 2
⇒ Third term = 10 × 2 + 6 × 2 = 20 + 12 = 32
similarly , we can calculate the all next terms .
Second series :-
First term = 2
Second term = First term × 1 + 7 × 1
⇒ Second term = 2 × 1 + 7 × 1 = 2 + 7 = 9
Third term = Second term × 2 + 6 × 2
⇒ Third term = 9 × 2 + 6 × 2 = 18 + 12 = 30
Hence , the place value of ( b ) is 30 .
