Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What is always in front of you but can’t be seen?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

Can you count the number of triangles inside a triangle?

Rearrange the letters in "new door" to make one word.

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Which Travels Faster? Solve below famous picture riddle: