Can you find out the total number of triangles in the given figure?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Can you fill the blank with the correct number?

6 30 870 756030 _____

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Prove that twice of ten is the same as twice of eleven.

Which is the rope you never skip with?

What has 88 keys?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?