Add new comment

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.
What do chocolate and mayonnaise have in common? It's maths! Find out how in this podcast featuring engineer Valerie Pinfield.
Is it possible to write unique music with the limited quantity of notes and chords available? We ask musician Oli Freke!
How can maths help to understand the Southern Ocean, a vital component of the Earth's climate system?
Was the mathematical modelling projecting the course of the pandemic too pessimistic, or were the projections justified? Matt Keeling tells our colleagues from SBIDER about the COVID models that fed into public policy.
PhD student Daniel Kreuter tells us about his work on the BloodCounts! project, which uses maths to make optimal use of the billions of blood tests performed every year around the globe.
This method managed to get not just my own but all my children birth days wrong, also far to complicated in the decade  this way works!
30/05/1981
Year figure
Divide 81 by 4 discard remainder and add to 81
e.g. 20+81 =101 Mod7 gives you 3
Month figure  use the (similar to the other method but...)
033614625035
Therefore May=1
Day figure=30
Therefore 3+1+30 =34 Mod7 is 6 Saturday
CORRECT!!
Using their method you 30+0+3+0 which gave Mod 7 of 5 Friday, which is incorrect.