Advanced MathMediumTwo numbers from a sum and a product
Advanced Math practice question
Two positive numbers have a sum of 12 and a product of 35. What is the larger number?
Answer: 7
The numbers are roots of n² − 12n + 35 = (n − 5)(n − 7) = 0: 5 and 7. The larger is 7.
Common wrong answers
- If you answered 5
- 5 is the smaller number.
- If you answered 12
- 12 is the sum.
- If you answered 35
- 35 is the product.
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