Which is Odd One Out and why?

4377

3954

9862

8454

9831

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Remove two matchsticks to make the below equation correct.

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

Can you start the fire using two pieces of wood?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What seven-letter word has hundreds of letters in it?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?