perplexus.info :: Just Math : Staggering Digits

Staggering Digits (Posted on 2016-07-28)

Find the last three digits of this number:

9^{7^{5^3²}}

*** For an extra challenge, solve this puzzle without using a computer program.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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re: Solution

| Comment 3 of 4 |

(In reply to Solution by armando)

The intention is 9^(7^(5^(3^2))), as the superscripts get tinier up and to the right.

Stacked exponents are applied from the top down, i.e., from right to left.^[1]^[4]

Posted by Charlie on 2016-07-28 15:20:11

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