Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Can you place six X (crosses) in below board without making three in a row in any way ?

Find the Goldfish below the given Image.

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

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

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

10+10 and 11+11 can give you the same answer.

Explain how?