Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Using eight eights and addition only, can you make 1000?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

What will you call your mother's brother's brother-in-law?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?