One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

How can you make number one disappear by adding something to it?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

2, 3, 5, 9, 17, _ What is the next number in the sequence?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

How can you tell a raw egg from a hard-boiled egg?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?