Find out the wrong term from the given series | vedclass

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Question

(A) The pattern of the series is based on the formula $x_{n+1} = (x_n 	imes 2) + 1$.Let us verify the terms:$3 	imes 2 + 1 = 7$$7 	imes 2 + 1 = 15$

Vedclass · Accepted Answer

$39$

Vedclass · Answer

(A) The pattern of the series is based on the formula $x_{n+1} = (x_n 	imes 2) + 1$.Let us verify the terms:$3 	imes 2 + 1 = 7$$7 	imes 2 + 1 = 15$$15 	imes 2 + 1 = 31$ (Instead of $39$)$31 	imes 2 + 1 = 63$$63 	imes 2 + 1 = 127$$127 	imes 2 + 1 = 255$$255 	imes 2 + 1 = 511$Since $39$ does not fit the pattern,it is the wrong term. The correct term should be $31$.

Find out the wrong term from the given series.
$3, 7, 15, 39, 63, 127, 255, 511$

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Find out the wrong term from the given series.$3, 7, 15, 39, 63, 127, 255, 511$