3 years ago

Ike likes numbers only if the sum of their digits is 9. How many digits between 10-100 does he like? *

2 answers:

6 0

There are many divisibility tests. ... 9: A number is divisible by 9 if the sum of its digits is divisible by 9. .... Each number has only two factors: 1 and itself. 6 ...

Rashid [163]3 years ago

4 0

Ok so its 8 `1&8 2&7 3&6 4&5 and then all of those numbers reversed
18 27 36 45 and 81 72 63 54

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