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Find the missing number? 15, 30, ? , 40, 8, 48

Correct Answer: 10

Explanation:

Given nuber series is 15, 30, ? , 40, 8, 48 


Here the number series follows a pattern that


15


15 x 2 = 30


30  ÷  3 = 10


10 x 4 = 40


40  ÷  5 = 8


8 x 6 = 48


Hence, the missing number in the series is 10.


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