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In "Number Series" question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces

In following question, a number series is given with one term missing.

Choose correct alternative that will same pattern and fill in the blank spaces.

7, 6, 10 ,27, 104, __

Option:
A. 520
B. 420
C. 515
D. 525
Answer: C . 515

Justification:

Here,

7 * 1 - 1 = 6

6 * 2 - 2 = 10

10 * 3 - 3 = 27

27 * 4 - 4 = 104

So 104 * 5 - 5 = 515

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