John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Which is the smallest number that you can write using all the vowels exactly once?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100