There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

What word is pronounced the same if you take away four of its five letters?

What brings you down but never up?

During which month do people sleep the least?

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?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

If eleven plus two equals one, what does nine plus five equal?

How is a fly different from a mosquito?