Prime Numbers and Factors

The factors of 18 are

• 1,2,3,5 and 18

• 1,2,3,6,9 and 18

• 2,3,6,9 and 18

Which is not a factor of 10?

• 2

• 5

• 8

Complete the pattern

9, 18, 27, 36, -------, ------

• 48, 54

• 37, 49

• 45, 54

The factors of a prime number are?

• 1 and itself

• 1 and 2

• any odd number

What is 1580 in Roman Numerals?

• CLVIII

• MLVIII

• MDLXXX

The product of 12 and 20 is

• 240

• 2040

• 340

Mummy went to the market with N500, she bought rice N220. How much is the money left with her?

• N380

• N720

• N280

24 is an example of --------- number

• Odd

• Prime

• Composite

There are 312 boys and 489 girls in a school. How many pupils are in the school?

• 701 pupils

• 801 pupils

• 601 pupils

Which is not a correct pair of 36?

• 2 X 18

• 4 X 9

• 5 X 7