I am greater than 43 and less than 52 If i add the digits, the sum is 8.

The possible numbers greater than 43 and less than 52 are:

44, 45,46, 47, 48, 49, 50 and 51

Now let us find sum of digits of each one of these,

44 : 4+4 = 8

45: 4+5 = 9

46: 4+6 = 10

47: 4+7 = 11

48: 4+8 + 12

49: 4+9 = 13

50: 5+0 = 5

51: 5+1 = 6

Out of these 44 is the number whose digits add up to give 8.

Answer: 44