How many times in a given day, minutes and hour clock comes in a straight line ?

Can you make a six-letter word using the letters N, A and B ?

what does the below rebus means?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Can you count the number of triangles in the given picture?

What has hands, but can’t clap?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

It belongs to you, but other people use it more than you do. What is it?

If 21x = 79x, what is the value of x?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?