Question

there are ____ prime number between 2 and 19.
option -: (A)8 (B)7 (C)6 (D)5 ​

Answer 1

Answer:

prime numbers are those numbers which can not be a factor of another number except itself

so prime number. betweens 2 and 19 are 3 , 5 , 7 , 11 , 13 , 17

now from the options

5 is your answer mate

Answer 2

Given: numbers 2 and 19.

To find: there are ____ prime numbers between 2 and 19.

Solution:

Know that, a prime number is the number that has 1 and the number itself as factors.

Write the prime numbers between 2 and 19.

Prime numbers$=2,3,5,7,13,17,19$ (including 2 and 19)

Prime numbers$=3,5,7,13,17,19$ (excluding 2 and 19)

                        $=6$ numbers

Therefore, there are 6 prime numbers between 2 and 19.

Hence, the correct answer is option (C). i.e., 6.