In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

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

There is one four-digit whole number n, such that the last four digits of n2 are the original number n