Question
Calculate the digit sums of
(i) 4-digit numbers
(ii) 5-digit numbers
whose digits are consecutive. Do you notice any pattern?
(i) 4-digit numbers
(ii) 5-digit numbers
whose digits are consecutive. Do you notice any pattern?
✓
Answer
(i) $10,14,18, \ldots . .30$; Each sum is 4 more than the preceding sum.
(ii) $15,20, \ldots . ., 35$; Each sum is 5 more than the preceding sum.
(ii) $15,20, \ldots . ., 35$; Each sum is 5 more than the preceding sum.
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