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

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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?