Lesson 11 of 14
Checkpoint: roots with a partner, and three numbers
Show on a big screenOne question on each of the later ideas. Retry as often as you like.
To prove 7 + √2 irrational, suppose it equals p/q. What is √2 then?
Which number is rational?
What is the HCF of 6, 15 and 21?
What is the LCM of 4, 6 and 9?
For which numbers is HCF × LCM always equal to their product?
0 of 5 answered
Finish the checkpoint to complete this lesson — you can always retry for a better score.