Which number should replace the question mark?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Can you find a rabbit in the given picture?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

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?

What goes up but never comes down?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?