Why do people go to bed?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What part of the chicken has the most feathers?

Prove that the below maths equation is true.

8 + 8 = 91

What do you get if you add 2 to 100 four times?