Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Count the number of lines in the image below ?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I add 5 to 9 and get 2. The answer is correct, so what am I?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

Can you name an animal whose killing cannot be performed without spilling your own blood?

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

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