Question

find the unit digit of the product of all element of the set which consists all prime number greater than 2 but less than 222​

Answer 1

Step-by-step explanation:

Since 2 is the only even prime number and the list of prime numbers also consist of 5.

Product of 2 and 5 is 10.

If 10 is multiplied to any number, the last digit must be 0.

So, the product of first ’n’( n>2) prime numbers must have 0 as the last digit.

Hence, the product of prime numbers between 1 and 100 ends with 0.