Question

Number of zeroes at the end of product of first 15 prime numbers

Answer 1

Answer:

no zeros will be there at the end of the product of first 15 prime no

Answer 2

Zeroes at the end of product of first 15 prime numbers is 1

Solution:

Given that,

We have to find number of zeroes at the end of product of first 15 prime numbers

The first 15 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

To obtain a zero at the end of product, you need to multiply 2 by 5

Each pair of 2 and 5 will give us one zero

So find how many pairs of 2 and 5 exist in the multiplication of first 15 prime numbers

In case of first 15 prime numbers, only one pair of 2 and 5 is present

Thus zeroes at the end of product of first 15 prime numbers is 1

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