You need to arrange three 7 and mathematical symbols to form number 1?

Count the number of triangles in the picture below:

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

What is the centre of gravity?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

How many triangles can you count in the figure given?

Find the next number in the following series:
6, 14, 26, 98, __?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?