What has 13 hearts but no other organs?

You need to arrange three 7 and mathematical symbols to form number 1?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

I always drive my customer away.

Who am I?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Can you find out the remainder when 3^300 is divided by 5?

Can you count the number of squares in the figure below?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?