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NDA | Mathematics | Special series

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Question 1

Find the missing number of the series 6, 9, 18, ?, 135.

Question 2

Find the missing number of the series 3, 4, ?, 48, 576.

Question 3

Find the missing number of the series 5, 13, 25, 41, ?, 85.

Question 4

Consider the following statements

I. The sum of cubes of first 15 naturel numbers is 14400

II. The sum of square of first 20 natural numbers is 2898 which of the above statements is /are correct?

Question 5

Find the number of terms in the series  , if sum is 513?
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Mar 27NDA