Factors and Prime Factors of 42

This video tutorial explains how to find all factors of the number 42 using a systematic approach. It begins by identifying pairs of numbers that multiply to 42, then narrows down to the prime factors. The video concludes with a summary and encourages viewers to subscribe for more math and science content.

What is the first step in finding the factors of 42?

• Multiply 42 by 2

• List all even numbers

• Start with 1 and 42

• Divide 42 by 3

Which of the following numbers is a factor of 42?

• 9

• 8

• 14

• 5

Why is 5 not a factor of 42?

• 42 ends in a 2

• 5 is an odd number

• 5 is greater than 42

• 42 is not divisible by 5

Which pair of numbers multiplies to give 42?

• 8 and 5

• 5 and 9

• 4 and 10

• 6 and 7

What is the first prime factor of 42?

• 3

• 7

• 5

• 2

Which of the following is a prime factor of 42?

• 7

• 9

• 6

• 8

What are the prime factors of 42?

• 2, 3, 5

• 3, 5, 7

• 2, 3, 7

• 2, 5, 7