A) 5
B) 15
C) 25
D) 40
Correct Answer: A
Solution :
\[\text{1 }\times \text{ 3}=\text{3},\text{4 }\times \text{ 3}=\text{12},\text{2 }\times \text{ 3}=\text{6}\] Similarly, \[\text{5 }\times \text{ 3}=\text{ 15}\].
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