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?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

How many triangles are there in the picture below?

What kind of band never plays music?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

What is common among 11, 69, and 88?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

Take one out and scratch my head, I am now black but once was red. What am I?

Can you find the key in the picture below?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?