Iam a number between 60 and 100 . my ones digt is two less then my ten's digit .i am a prime number between

Here are the two digit numbers between 60 and 100 that have a units digit two less than the tens digit:
64
75
86
97

Of that list, we can see that
64 is composite since 64 has factors other than 1 and itself (eg: 2)
75 is composite since 75 = 3*25
86 is composite since 86 = 2*43
97 is prime. The only factors are 1 and itself

So if you're looking for a prime number that fits the criteria that it must be between 60 and 100, with the units digit two less than the tens digit, then the answer is 97

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.