What goes up but never comes down?

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

What does below Rebus say?

XLR8

Which digit occurred maximum times between the number 1 and 1000?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

Count the number of triangles in the given picture.

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??