If it took eight men ten hours to build a wall, how long would it take four men to build it?

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

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

What is the last thing you take off before bed?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Can you solve the below tricky visual equation?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How many triangles are there on the puzzle below?