There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Can it be possible to build a house that has all its four walls facing towards the South?

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

True Or False?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

Which number should replace the question mark?

Solve the puzzle by telling what does below picture means.

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Find the number of squares in the below-given picture.

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?