There are forty elephants and they have forty-fore heads. How can this be possible?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Find the smallest sentence with all the English alphabet.

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What has a bottom at the top?

With the help clues provided in the image, can you find the 5 digit key?

I have teeth but i don't bite. Who Am I ?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?