perplexus.info :: Numbers : Naughty Nimble Nines 2

Home > Numbers

Naughty Nimble Nines 2 (Posted on 2023-09-27)

Use precisely four 9's, and build an expression that works out to 161.

(I) At least one 9 can be turned upside down to 6.

(II) None of the 9s can be turned around to 6.

See The Solution Submitted by K Sengupta

Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): One more

Comment 6 of 6 |

(In reply to re: One more by Charlie)

You are right.

However in "five fives" we used it within the definition of permissible operators.

Posted by Ady TZIDON on 2023-09-27 14:00:09

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info