amazingxin777

that is so sad

why is CPhill gone???

I'll think about complementary counting, haven't tried that method on this problem yet... 

Thanks for the idea

A quick summary of what hugomimihu wrote:

First find all of 7's multiples between 1-100.

Then find all of 11's multiples between 1-100.

Add the sums together.

Minus the numbers that repeat (basically find the least common multiple of 7 and 11 which is 77-- Since there is only one multiple of 77 between 1-100, you only need to minus one.)

If \(\)\(2\times 3 \times12\times14\times15\times20\times21 \) can be divided into 2 equal sets, then that means it is something's square. If you do the square root of \(2\times 3 \times12\times14\times15\times20\times21\), it equals 2520. So the answer is \(\boxed{2520}\)

If anything is unclear or unhelpful, just ask me! 

don't post any unhelpful answers (if this is even an answer?!)

you are not helping at all!

thank you that was correct!!!!

tHe hint guest gave i already knew  but it is a great start! 

that's not the only way... 

I need the full answer and solution

To find the volume of the water in the basement you multiply \(24 \space \text {ft} \times 32 \space \text {ft} \times 18 \space \text {in}\).

Then using the formula: \(\frac {24 \space \text {ft} \times 32 \space \text {ft} \times 18 \space \text {in}} {\frac{1}{8} \times 3}\) 

Figure out the rest yourself.