If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What do you call a fish without an eye?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?