Question

Without using a calculator, find the sun of all of the fights of the answer to the following:

Answer 1

5

Explanation:

The trick with these questions is to always rewrite some part of the expression as a power of 10.

First focusing on the powers of 5, and 2, we can rewrite this product as:

`5^(2012) * 2^(2012) * 2 * 16\\`

Now because the powers are the same, we can multiply the bases together:

`32 * (5*2)^(2012)\\\\32 * 10^(2012)`

Now we can see that this would be equal to 32,000,000,000.....

So the sum of the digits is just 3 + 2 = 5.