When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Find the missing letter in the last circle logically in the given below picture.

I’m tall when I’m young, and I’m short when I’m old. What am I?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?