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Mang Lito harvested vegetables in the garden. He got 17 ampalaya , 13 eggplants , 21 cucumber and 23 tomatoes . Which of the following is a composite number ?
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A. 13
B. 17
C. 21
D. 23
- 21 is a composite number because it has more than two factors ,which is 1 , 3 and 7
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- 13 is not a composite number because it has only two factors which is 1 and 13
- 17 is not also a composite number because it has only two factor which is 1 and 17
- then 23 is also not a composite number because it has only two factors which is 1 and 23
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