A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

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?

How many triangles can you find in this given picture?

Five lovely ladies(Sophia, Isabella, Madison, Emma and Olivia) planned a picnic.

They each buy one thing each for the picnic.

Sophia, Emma and Olivia got a drink : orange-Juice, apple-juice, and mango-juice.
Olivia got the drink with the same letter as the one in her first name.
Emma loves mango-juice.
The other two bring some food : chocolates and pizza.
Also Madison is allergic to cheese.

So which ladies bought what ?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Find the smallest sentence with all the English alphabet.

Imagine you are in a room with no windows or doors. How will you get out?

What goes up but never comes down?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

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