Question 11

In the following question,select the missing number from the given alternatives.

7, 26, ?, 124, 215, 342

Solution

The numbers are of the form $$(n)^3-1$$ where $$n$$ is a natural number.

$$(2)^3-1=7$$

$$(3)^3-1=26$$

$$(4)^3-1=63$$

$$(5)^3-1=124$$

$$(6)^3-1=215$$

$$(7)^3-1=342$$

=> Ans - (A)

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