I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

There are 3 apples in the basket and you take away 2. How many apples do you have now?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

What has hands, but can’t clap?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Prove that twice of ten is the same as twice of eleven.

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Can you solve the photo plexer logic ?