Question

if a number contains three zeros at the last then how many zeros will it's square have ​

Answer 1

Solution:

Let's start from an example: square of 10 = 100

[note a number contains 1 zero then its square have 2 zeros]

Now let's consider another example: square of

100=10000

[note a number contains 2 zeros then its square

have 4 zeros]

Now let's talk about a number contains 3 zeros

at the end

square of 1000 = 1000000

Conclusion: every time zeroes get double. Then the answer is 6 zeros.

Hope this help!