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

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What demands an answer, but asks no questions

How can one talk without saying a single word?

Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?

what does the below math rebus puzzle mean?