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

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Through your logical capabilities, can you make 7 an even?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

What is black when you buy it, red when you use it, and gray when you throw it away?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.