Find the next number in the series 1, 3, 15, 45, 225, ___?

 

Find the next number in the series 4, -5, 11, -14, 22, ___?

If Sophie has five friends in the class and no one else has five friends, which out of the following is the most appropriate answer?

Four people, Peter, Smith, Jack, and Tom, arrive at the airport. If three people are speaking the truth and only one is lying, who is the first person to arrive at the airport?

Peter: "Tom got here first."

Smith: "Peter arrived later than Tom."

Jack: "Smith is lying."

Tom: "I arrived earlier than Jack."

There are five people, A, B, C, D and E. A is older than B. C is older than D. D is older than E. B and E are of exactly the same age.

If the above information is true, which of the following must also be true?

When Jack sleeps, Jill starts crying and Peter starts laughing. If Peter is not laughing, which of the following is the most appropriate conclusion?