Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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 ?

Find the next number in the series below

21 32 54 87 131 ?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

A father's child, a mother's child, yet no one's son.

Who am I?

In the four images below, can you find the odd one out?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?