Question

In each of the following question, select the related number from the given alternatives.
$91$ $:$ $?$ $:$ $:$ $64$ $:$ $54$

• A. $63$
• B. $101$
• C. $32$
• D. $70$

Answer 1

The correct option is A $63$

Sum of digits of $91=9+1=10$ and

Sum of digits of $64=6+4=10$

Similarly,

Sum of digits of $54=5+4=9$

Sum of digits of $63=6+3=9$

Hence, A is the correct option.