Question

In the questions, numbers are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark

$3$	$5$	$7$	$9$	$15$	$13$
$8$	$26$	$48$	$82$	?	$170$

• A. $121$
• B. $224$
• C. $120$
• D. $225$

Answer 1

The correct option is B $224$

Given series	3	5	7	9	15	13
Squaring	9	25	49	81	225	169
subtract and add 1 alternately	-1	+1	-1	+1	-1	+1
New series	8	26	48	82	224	170

In this we will first square the given series.

Then subtract and add 1 in the series alternately

And then required series is what we need.

Hence, Option B is correct.