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Go left of the number (Posted on 2020-11-15)

Find the leftmost digit of 12³⁷ (pencil and paper solution required)

No Solution Yet Submitted by Danish Ahmed Khan

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an idea (with spoiler--solution)

| Comment 1 of 5

A table of logarithms is made of paper.

Spaces left to hide spoiler

The common log of 12 is 1.07918

Multiply that by 37 to get 39.92966

The antilog of the mantissa is 8.50 and the first digit is 8.

Verify with calculator:

8.5056224998211 x 10^39

Posted by Charlie on 2020-11-15 11:49:18

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