Tamara Dominas
Do you remember how to calculate the Greatest Common Divisor? Do these quick counts without resorting to pencil and paper. Don’t cheat! It’ll be useful in this quiz. 40% of people need to use pencil and paper, do you belong to that group? Do you like to speed up your neurons?
Greatest Common Divisor. Do you know how to calculate it? [QUIZ]
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- Question of
Let’s start! Find the gcd of 20 and 80:
- 20
- 80
- 10
- Question of
All right! and the gcd of 33, 77 and 121?
- 11
- 12
- 20
- Question of
No need to make many counts, what is the gcd of 21 and 28?
- 7
- 6
- 5
- Question of
How you doing? Now the gcd of 15 and 30
- 30
- 15
- 5
- Question of
Now! gcd of 30, 42 and 54
- 6
- 30
- 8
- Question of
What is the gcd of 20 and 16?
- 2
- 4
- 8
- Question of
18 and 24?
- 6
- 18
- 24
- Question of
This one surely will be too easy for you: gcd of 3, 6, 9
- 9
- 6
- 3
- Question of
What if we make it a little harder? 32, 48, 64 and 80
- 20
- 16
- 14
- Question of
What is the gcd of 15, 20, 30 and 60?
- 5
- 10
- 15
- Question of
16, 24 and 40 have as gcd:
- 8
- 2
- 4
- Question of
gcd of 7, 14 and 21
- 21
- 14
- 7
- Question of
gcd of 20, 28, 36 and 40
- 2
- 4
- 8
- Question of
gcd of 144 and 520.
- 2
- 4
- 8
- Question of
Last! What is the gcd of 28, 42, 56 and 70?
- 14
- 16
- 12
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