MCQ
7 × 11 × 13 + 13 is a/an
- Aodd number but not composite
- Bsquare number
- Cprime number
- ✓composite number
✓
Answer
Correct option: D.
composite number
(d) composite number
Explanation: We have $7 \times 11 \times 13+13=13(77+1)=13 \times 78$. Since the given number has 2 more factors other than 1 and itself, therefore it is a composite number.
Explanation: We have $7 \times 11 \times 13+13=13(77+1)=13 \times 78$. Since the given number has 2 more factors other than 1 and itself, therefore it is a composite number.
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