Can you write down eight eights so that they add up to one thousand?

How many times can you subtract the number two from the number fifty?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Can you find the six hidden animals in the picture below?

Decode below rebus
D
N
A
T
S , D

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Find the next number in the sequence

5 12 24 36 ?

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