What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I always drive my customer away.

Who am I?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

What does an Island and the letter T have in common?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

How do you go from 98 to 720 using just one letter?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?