Can you replace the question mark with the correct number?

Find the missing number in the sequence below:

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

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?

Can you name some countries which do not have the alphabet 'A' in them?

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

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

How many triangles can you find in this given picture?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?