. The smallest prime number is
A prime number is a number whose factors are 1 and the number itself.
So first find how many of the given options are prime numbers by finding their factors.
If their factors have 1 and the number itself, then those numbers are primes.
To find the smallest prime number from the given options.
1 is an odd number and 1 has only one factor that is 1 itself.
1 is not a prime number as well as not a composite number.
2 is an even number and 2 have two factors : 1 and 2.
As 2 have only two factors, it is a prime number.
3 is an odd number and 3 also have two factors : 1 and 3.
As 3 also have only two factors, it is also a prime number.
4 is an even number and 4 have three factors : 1, 2 and 4.
As 4 has three factors it is not a prime number. 4 is a composite number.
So finally we got two prime numbers, they are 2 and 3.
2 is smaller than 3.
Therefore, 2 is the smallest prime number.
So, the correct answer is “Option B” i.e. 2