The sum of digits of the second number is subtracted from the sum of digits of first number.
Eg = $$(6+4)-(1+4)=10-5=5$$
and $$(9+2)-(3+1)=11-4=7$$
and $$(2+6)-(1+1)=8-2=6$$
Similarly, $$(5+6)-(2+2)=11-4=7$$
=> Ans - (B)
Create a FREE account and get: