Question

Out of nine cells of a square one cell is left blank and in the rest of the cells numbers are written which follow some rule. Get the rule and find out the proper option for the blank cell (?).

2	72	56
?	0	42
12	20	30

• A. 4
• B. 6
• C. 8
• D. 10

Answer 1

Answer: (B)

6

$2^2-2=2$	$9^2-9=72$	$8^2-8=56$
$3^2-3=6$	$1^2-1=0$	$7^2-7=42$
$4^2-4=12$	$5^2-5=20$	$6^2-6=30$

And

$0+2=2$	$56+16=72$	$42+14=56$
$2+4=6$	$0+0=0$	$30+12=42$
$6+6=12$	$12+8=20$	$20+10=30$