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

Can you find out the remainder when 3^300 is divided by 5?

Find the value of "?" in the ball picture Riddle below:

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

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

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

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

Solve the mathematical equation in the picture below.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.