You need to arrange three 7 and mathematical symbols to form number 1?

In the image below, can you find the value of an angle(y)

How do you go from 98 to 720 using just one letter?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Our product and our sum always give the same answer. Who are we?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?