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The number of 2 digit prime number is

Question

The number of 2 digit prime number is

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Solution 1

Sure, here are the steps to find the number of 2-digit prime numbers:

Step 1: Identify the range of 2-digit numbers. They range from 10 to 99.

Step 2: List down all prime numbers within this range. Prime numbers are numbers that have only two distinct positive divisors: 1 and the number itself. The prime numbers between 10 and 99 are: 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

Step 3: Count the number of prime numbers in the list. There are 21 prime numbers between 10 and 99.

So, the number of 2-digit prime numbers is 21.

This problem has been solved

Solution 2

Sure, here are the steps to find the number of 2-digit prime numbers:

Step 1: Identify the range of 2-digit numbers. They range from 10 to 99.

Step 2: List down the prime numbers within this range. Prime numbers are numbers that have only two distinct positive divisors: 1 and the number itself. The prime numbers between 10 and 99 are: 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

Step 3: Count the number of prime numbers in the list. There are 21 prime numbers between 10 and 99.

So, the number of 2-digit prime numbers is 21.

This problem has been solved

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