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?

You need to move three matchsticks to form three squares. Can you do it?

Which point will the car reach to go out?

If 1+9+8=1, what is 2+8+9?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Can you quickly find which two matchstick figures are identical?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How many triangles are there in the picture below?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

Count the number of triangles in the given picture.