Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Can you find the company name in the pictogram below?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

You need to move three matchsticks to form three squares. Can you do it?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What runs around the whole yard without moving?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?