What has 13 hearts but no other organs?

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

Explain how?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

If 21x = 79x, what is the value of x?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

There are 4 big houses. They are made from the materials: red marble, green marble, white marble and blue marble.

* Mrs Jennifer's house is somewhere to the left of the green marble one and the third one alone is white marble.
* Mrs Sharon owns a red marbles house and Mr Cruz does not live at either end, but lives somewhere to the right of the blue marbles house.
* Mr Danny lives in the fourth house, while the first house is not made from red marble.

Who lives where, and what is their house made from?

Can you solve the below rebus?

Can you fill the blank with the correct number?

6 30 870 756030 _____

How many Watermelons are there in the below picture?

During which month do people sleep the least?