9514 1404 393
Answer:
26, 37, 40, 48
Step-by-step explanation:
Whole numbers between 20 and 50 will have 10s digits in the range 2–5.
When 4 is added to these numbers, we get ...
2+4 = 6
3+4 = 7
4+4 = 8
5+4 = 9
When 4 is subtracted from these numbers, we get ...
2-4 = -2
3 -4 = -1
4 -4 = 0
5 -4 = 1
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The numbers we can make using the given 10s digits and their corresponding 1s digit(s) are ...
26, 37, 40, 48
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We note that any number with a 10s digit of 5 and a 1s digit other than 0 will be out of range.
