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

If you say my name, I will no longer exist. What am I?

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 ?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

How can you take 2 from 5 and leave 4?

Which Travels Faster? Solve below famous picture riddle:

I’m tall when I’m young, and I’m short when I’m old. What am I?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

What has many teeth, but cannot bite?

Can you fill the blank with the correct number?

6 30 870 756030 _____