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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4 9 25 103 3 (a) (b) (c) (d) (e) Which of the following numbers will come in place of (c) ?
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- 391
- 81
- 91
- 79
- None of these
Correct Option: D
The given series is in the below pattern ,
First series :-
First term = 4
Second term = First term × 2 + 1
⇒ Second term = 4 × 2 + 1 = 9
Third term = Second term × 3 - 2
⇒ Third term = 9 × 3 - 2 = 25
similarly , we can find the all others terms .
......... and so on .
Second series :-
First term = 3
Second term = First term × 2 + 1
⇒ Second term = 3 × 2 + 1 = 7
Third term = Second term × 3 - 2
⇒ Third term = 7 × 3 - 2 = 19
Fourth term = Third term × 4 + 3
⇒ Fourth term = 19 × 4 + 3 = 79
Hence , the place value of ( c ) is 79 .
