What is the sum of all positive two-digit integers which are divisible by both the sum and product of their digits?
A.
36
B.
54
C.
72
D.
None of the above
Exam No：2018 First Round Grade 7 Year：2018 Question No：35
Answer:
C
Knowledge points:
G7 - Number Theory - Systematic Application of Divisibility
Solution:
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