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lesya [120]
3 years ago
13

My son has the following missing number pattern to solve.

Mathematics
2 answers:
melisa1 [442]3 years ago
6 0
The only complete pattern is the middle one
we see that 38-29=9
so the middle number minus the first number equals the third number
for the last row
21-1=20  so you have 1  21   20
for the first one

17- ?=37
54-17=37      54  17  37 
alexandr402 [8]3 years ago
3 0
For the first one is 1,21,20

The second one is 54,17,37
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