Jane Street Interview Question
How many digits in 7^7?
Interview Answer
Anonymous
Nov 4, 2013
We know 7^2 = 49, which is about 50. So 7^6 is about 50*50*50 = 125000. Then 12*7 = 84, so this is around 840000, so 6 digits.
2
How many digits in 7^7?
Anonymous
We know 7^2 = 49, which is about 50. So 7^6 is about 50*50*50 = 125000. Then 12*7 = 84, so this is around 840000, so 6 digits.
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