What four weights can be used to balance from 1 to 30 pounds?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Can you count the number of quadrilaterals in the picture below?

What is both possible and impossible at the same time?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

All Marigolds are flowers.
Few Flowers are used to make colors.
Therefore, some Marigold are used to make colors.

True Or False?

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.

I know a nine-letter word having only one vowel.
Do you ?