Question 39

In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series.
0, 7, 26, (65), 124, 215, (344), 511

Solution

Given series 0, 7, 26, (65), 124, 215, (344), 511

the above is pattern followed

$$ 1^3 -1 , 2^3-1, 3^3-1. (4^3-1), 5^3-1, 6^3-1, (7^3-1) , 8^3-1 $$

$$\Rightarrow 0, 7,26, (63) 124, 215, (342) 515 $$

then the Braacket number is incorrect Both (i.e not follow the pattern )

therefore (C) Both the Bracket number are incorrect. Ans

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In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series.0, 7, 26, (65), 124, 215, (344), 511