Number Properties Puzzle – Challenge 10

Number Properties Puzzle – Challenge 10

This is a great math challenge related to Number Properties for those who love critical thinking challenges. To solve this problem, you need to use your knowledge of exponents. Let’s challenge your brain!

Challenge:

If \(a=2^{6000}, b=3^{4000}\) and \(c=7^{2000}\), which of the following is true?

A- \(a < b < c\)

B- \(c < b < a\)

C- \(a < c < b\)

D- \(c < a < b\)

E- \(b < a < c\)

The Absolute Best Book to challenge your Smart Student!

The correct answer is D.

\(a=2^{6000}, b=3^{4000}\) and \(c=7^{2000}\)
Find the \(2000^{th}\) rout of each number:
\(\sqrt[2000]{a}= \sqrt[2000]{2^{6000}} = 2^{\frac{6000}{2000}} = 2^3 = 8\)
\(\sqrt[2000]{b} =\sqrt[2000]{3^{4000}} = 3^{\frac{4000}{2000}} = 3^2 = 9\)
\(\sqrt[2000]{c} = \sqrt[2000]{7^{2000}} = 7^{\frac{2000}{2000}} = 7^1 = 7\)
Therefore: \(c < a < b\)

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