John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

10+10 and 11+11 can give you the same answer.

Explain how?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

When 99 is considered higher than 100?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Which alphabet letter is a question?

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

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?