A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Count the number of triangles in the given picture.

Buy me, smell me or deliver me, I do not change.

Who am I?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

You can see three almost identical images below. Can you spot the odd one out from them?

How could a baby fall out of a twenty-story building onto the ground and live?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den