ANS:C - 61    3C    117

First find the decimal equivalent of 3C which will be = 3 * 16^1 + 12 * 16^0 i.e. 60.

Now find the decimal equivalent of 25 which will be= 2 * 16^1 + 5 * 16^0 i.e. 37.

Now add both these in the decimal form we get the decimal addition as= 60+37 i.e. 97.

Now convert this decimal 97 into hexadecimal format i.e. 61.

Now do the same for all.