People put me on the table and cut me but do not eat me. What am I?

You need to cut a round cake into eight equal pieces with just 3 cuts. Can you do it?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Why is it very easy to weigh a fish?

How many triangles can you find in this given picture?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?