How many times can you subtract the number two from the number fifty?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

If 21x = 79x, what is the value of x?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

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?

Who can jump higher than a Mountain?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

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

True Or False?

Can you name some countries which do not have the alphabet 'A' in them?