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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.

  1. 381928.571.25
    18(a)(b)(c)(d)(e)
    Which of the following numbers will come in place of (d) ?
    1. 118.75
    2. 118.25
    3. 108.25
    4. 118.125
    5. None of these
Correct Option: D

The given series is in the below pattern ,
First series :-
First term = 38
Second term = First term × 0.5
Second term = 38 × 0.5 = 19
Third term = Second term × 1.5
Third term = 19 × 1.5 = 28.5
similarly , we can find the all others terms .
Second series :-
First term = 18
Second term = First term × 0.5
Second term = 18 × 0.5 = 9
Third term = Second term × 1.5
Third term = 9 × 1.5 = 13.5
Fourth term = Third term × 2.5
Fourth term = 13.5 × 2.5 = 33.75
Fifth term = Fourth term × 3.5
Fifth term = 33.75 × 3.5 = 118.125
So 118.125 should come in place of (d).



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