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 ?

I know a nine-letter word having only one vowel.
Do you ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Which is Odd One Out and why?

4377

3954

9862

8454

9831

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?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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?