There are no such numbers. The only number in the range that is divisible by 35 is 70 and that is not divisible by 9.
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21, 28, 35, 42, 49, 56
The only numbers between 30 and 50 that could be prime are 31, 33, 35, 37, 39, 41, 43, 45, 47, 49 because all other numbers are even. 35 and 45 cannot be prime because they are divisible by 5. 33 is divisible by 3, so it is not prime, and 49 is divisible by 7, so it is not prime. That leaves numbers 31, 37, 41, 43, 47, so there are five prime numbers between 30 and 50.
All multiples of 49 are divisible by it. Ex: 49, 98, 147 etc
There are 10 numbers between 10 and 80 that are divisible by 7 with no remainder: 14, 21, 28, 35, 42, 49, 56, 63, 70, and 77.
7, 14, 21, 28, 35, 42, 49, 56