Question

Q. 2. Sum of the number of primes between 16 to 80 and 90 to 100 is [NCERT Exemplar] (a) 20 (b) 18 (c) 17 (d) 16​

Answer 1

Answer:

Now we have the number of primes between 16 and 80 is 16 and the number of primes between 90 and 100 as 1. So, to get the required sum, we can add 16 and 1. Therefore, the required sum is 17. So, the correct answer is option C.

Answer 2

Now we have the number of primes between 16 and 80 is 16 and the number of primes between 90 and 100 as 1. So, to get the required sum, we can add 16 and 1. Therefore, the required sum is 17. So, the correct answer is option C.