What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What is the riddle which can be asked all day with a different correct answer each time.