Number Properties Puzzle – Challenge 12
This is a great logic puzzle and brain teaser for those who enjoy solving math and critical thinking problems. Let’s see how you solve it! The solution is also provided.
Challenge:
How many digits are used to write the number \(20^{10}\)?
A- 10
B- 11
C- 12
D- 13
E- 14
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The correct answer is E.
\(20^{10} = (2 × 10)^{10} = 2^{10 }× 10^{10 }= 1024 × 10^{10}\)
1024 has four digits and \(10^{10 }\) has 11 digits. Why?
Therefore, \(20^{10 }\) has 15 digits.The Absolute Best Books to Ace Algebra
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