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.

Can you decipher the below rebus?

PBLUESAISNUERSES

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Replace the question mark with the correct number.

I’m tall when I’m young, and I’m short when I’m old. What am I?

Move four matchsticks to the below square to form three squares?

What does Alexander the Great and Winnie the Pooh have in common?

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?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?