Find 2-digit number whose sum is 45 and whose HCF is 3.
9,36
15,30
20,25
21, 24
Correct Answer: 21, 24
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A. 10
B. 14
C. 21
D. 35
A. 20 days
B. 18 days
C. 24 days
D. 28 days
A. 10.12 hours
B. 15.36 hours
C. 19.41 hours
D. 26.57 hours