Question 66

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

Solution

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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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