Question

Example 21. Explain, why (3 x 5 x 7+7) is a composite number?
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Answer 1

First we have to follow the BODMAS rule so first we have to do multiple 3×5 = 15 and then we have to do add 7+7 = 14 then in question we see in between of 3×5 and 7+7 their is an × sign so we have to do multiple with the answer of both

15 × 14 = 210 so we know that 210 is a composite number