Answer :

There are 45 numbers between 49 and 95

Numbers in the fifties: 50,51,52,53,54,55,56,57,58,59

Numbers in the sixties: 60,61,62,63,64,65,66,67,68,69

Numbers in their seventies: 70,71,72,73,74,75,76,77,78,79

Numbers in their eighties: 80,81,82,83,84,85,86,87,88,89

Numbers in their nineties: 90,91,92,93,94

Multiples of 2:

50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94 

Multiples of 3:

51,54,57,60,63,66,69,72,75,78,81,84,87,90

Multiples of 9:

54,63,72,81,90

Notice that all multiples of nine are also multiples of three? That is because three is a factor of nine