Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

In the picture given below, can you find out which digit will take place of the question mark?

Remove two matchsticks to make the below equation correct.

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?