I can write cow in 13 letters.

Can You?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

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

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Which is heavier: a ton of bricks or a ton of feathers?