What happened when the wheel was invented?

I have Rs.50 and I spend it in the way as below.

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

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?

Find the next number in the series below

21 32 54 87 131 ?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?