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Question: Jessica scored less than 71 on a math test and her score is divisble by 3. What could be her score?


A ) 48
B ) 81
C ) 52
D ) 44

Steps to derive

1 A whole number is said to be divisible by 3 if the sum of all its digits is divisible by 3.

2 Try applying the rule to each number given in the choices.

3 We observe that both 48 and 81 are divisible by 3.

4 But, between the two, only 48 is the correct answer.
 [Because, Jessica scored less than 71.]



Hence the right answer is Option A

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