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

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

I look at you, you look at me, I raise my right, you raise your left. What am I?

What does the below image rebus riddle means ?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

Can you move 2 matchsticks to form four equal sized squares.

The Little ant seems to be always confused. Do you know why?

what does the below math rebus puzzle mean?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?