John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

How many triangles are there on the puzzle below?

How many times can you subtract the number two from the number fifty?

Before Mount Everest was discovered, what was the highest mountain in the world?