perplexus.info :: Numbers : 31 created by 4 successive integers

31 created by 4 successive integers (Posted on 2018-08-13)

Express 31 by 4 successive digits, using no more than 4 out of 5 basic operations (i.e. + - / * and exponentation), nothing else allowed.
No brackets!

The order of the digits must be an arithmetic progression like 8*7-6-5 or 3+4*5+6, examples fitting the specifications but not the result.

No Solution Yet Submitted by Ady TZIDON

Rating: 3.0000 (1 votes)

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Comment 7 of 7 |

31 = 7 * 5 - 3 - 1

31 = 9 + 7 + 5 * 3

Permitting concatenation of the basic operational symbol for subtraction, i.e., using it as signage for negative numbers:

31= -5 + 4 * 3^2

31 = -1 + 2^3 * 4

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Posted by Aayat Klein on 2019-12-20 20:51:59

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