If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

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

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Why is Saturday stronger than Monday?

I don't get anymore wetter, no matter how much rain falls on me.

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Which tank will fill first?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?