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

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

Can you find out the remainder when 3^300 is divided by 5?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What is the centre of gravity?

what does the below math rebus puzzle mean?