Find two positive real numbers whose product is a maximum. The sum is 140.
?

A. 90, 50 
B. ?100, 40
C. ?70, ?70
D. ?80, 60
E. ?10, 130


Answer: C

Mathematics

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Information is often transmitted in code. Many codes involve writing products of large primes, because they are difficult to factor. To see how difficult, try finding two prime factors of 5,893. (Hint: Both primes are greater than 70.)

What will be an ideal response?

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Mathematics