A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Can you find the thief by just looking at the picture below?

Find the missing number in the sequence below:

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

What is the last thing you take off before bed?

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?

If six children and two dogs were under an umbrella, how come none of them got wet?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Spot 5 differences in two Christmas tree below:

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