Sad Man and his friends use blocks to indicate the different factors of twelve. Bad Man tells the contestants that they have to highlight numbers on a grid, according to the number of factors they have. Sad Man interrupts to describe prime numbers. Decimole sings 'Five Is The Number'. In the street Bad Man rings on several doors to give the occupants various information about their house numbers. The information is not appreciated. Sad Man reveals that square numbers have an odd number of factors. In the Great Hall the contestants gain a precious maths card.

Viewers' Challenge

Using a 6 x 6 grid, can you see the pattern of prime numbers after the first row?

Answers

Click on a letter below to choose an answer.

	After 5, the prime numbers only appear in the first and fifth columns after the first row.
	After 5, the prime numbers only appear in the second and third colums after the first row.
	After 5, the prime numbers only appear in the third and fourth columns after the first row.