The average of the prime numbers between 80 and 90 is 83.
It is 83.
The prime numbers between 80 and 90 are 83 and 89.
(80 + 90) / 2 = 85Therefore, the number between 80 and 90 is 85.
83,87,89
There are 2 prime numbers between 80 and 90: 83 89
No but it is the only prime number between 90 and 100
Two.
83 and 89.
172
There are only 9 numbers between 80 and 90 - so lets look at them all Remember we only need to find 1 number that will divide the number except for 1 and itself for it to be NON-PRIME. 81 - 3 will of course divide this number - so not prime. 82 - 2 will of course divide this number - so not prime. 83 - PRIME!!! 84 - 3 will of course divide this number - so not prime. 85 - 5 will of course divide this number - so not prime. 86 - 2 will of course divide this number - so not prime. 87 - 3 will of course divide this number - so not prime. 88 - 2 will of course divide this number - so not prime. 89 - PRIME!!! So, the only numbers between 80 and 90 that are primes are 83 and 89!
The sum of prime numbers between 90 and 100 is 97, the only prime number between 90 and 100.