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?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Which country gets ill every time?

Find the smallest sentence with all the English alphabet.

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

What English word has three consecutive double letters?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

By using 'because' continuously three times, can you make an English statement ?