Spot 5 differences in two Christmas tree below:

Can you replace the question mark with the correct number?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you place six X (crosses) in below board without making three in a row in any way ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

You can see it everyday, But cannot touch it at will. What is it?