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

90, 180, 12, 50, 100, 200, , 3, 50, 4, 25, 2, 6, 30, 3

Option:
A. 150
B. 175
C. 225
D. 250
Answer: A . 150

Justification:

Clearly, 90 = 30 * 3,  180 = 6 * 30,  12 = 2 * 6,  50 = 25 * 2,  100 = 4 * 25,  200 = 50 * 4.
.'. Missing number = 3 * 50 = 150.

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