Can you start the fire using two pieces of wood?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

Can you write down eight eights so that they add up to one thousand?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?