Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What is the relationship between these matchstick pictures below?

Which letter of the alphabet has the most water?

I make two people out of one. What am I?

Can you identify the famous TV character from the rebus below?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10