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

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Can you decipher the two rows to find the hidden word?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Which digit occurred maximum times between the number 1 and 1000?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

What can you serve, but never eat?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?