Question

Sum of number paimes between
16 to 80 and 90 to 100
20 (b) 18 (c) 17 (as 16​

Answer 1

Step-by-step explanation:

Prime numbers between 16 and 80 are

17 , 19 , 23 ,29 , 31 , 37 , 41 , 43 , 47 , 53 ,

59 , 61 , 67 , 71 , 73 , 79 ,

Number of primes between 16 and 80 = 16

Prime number between 90 and 100 is 97

Number of prime between 90 and 100 = 1

Therefore ,

Sum of the number of prime between 16 to 80

and 90 to 100 = 16 + 1 = 17

Option ( C ) is correct .