If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

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

Can you make four (4) nines (9) equal 100?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

The centre of the third figure is empty. What digit should fit inside?

Below rebus represent famous DiCaprio movie. Can you name it?

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

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?