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EASY Mathmatical Puzzle

LightningGirl

New member
Sep 13, 2018
2
398=964
118=164
356=936
423=???

What does 423 equal?
 

Greg

Perseverance
Staff member
Feb 5, 2013
1,382
169
 

Klaas van Aarsen

MHB Seeker
Staff member
Mar 5, 2012
8,714

Monoxdifly

Well-known member
Aug 6, 2015
271
Hey LightningGirl! Welcome to MHB! ;)

Can you give me a hint? (Sweating)
First digit and last digit squared then put together.
I checked greg's solution and seems like it's also what he thought.