UPSC CDS 1 2022 Math Paper

Given:
Number is 275+313
Calculation:
We have 275+313
⇒(33)5+313
⇒315+313
Taking 313 common from bothe side, we get
⇒313(32+1)
⇒313×10
So, we can write
315+313=313×10
It means the number is divisible by 10 or (10×3n) where 1≤n≤13
According to the option
∴ The correct answer is 10 .