Question 66

Find the next number in this row.
15, 30, 33, 66, 69,?

Solution

Given series is 15, 30, 33, 66, 69,?

In the series, We can observe that number 15 is followed by it's double. similarly 33 & 66.

Therefore next number would be double of 69 i.e.., 138.

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