The factor pairs of 420 are:
1 x 420
2 x 210
3 x 140
4 x 105
5 x 84
6 x 70
7 x 60
10 x 42
12 x 35
14 x 30
15 x 28
20 x 21
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420
To find out how many 20s are in 420, you divide 420 by 20. This calculation gives you 420 ÷ 20 = 21. Therefore, there are 21 instances of 20 in 420.
420 = 2940
How about: 5*84 = 420 as one example
42 x 10 = 420