A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

In the given picture, in how many ways can you read the word "Tiger"?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

What brings you down but never up?

What is harder to catch the faster you run?

What is the largest number you can write with just 3 digits?

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.