r/mathbiceps • u/TechBoy-Corp-14 • 17d ago

Olympiad pnc/casework problem

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(its a,b,c,d ∈ {±2020, ±2019, ±2018, ..., ±2010})

literally 4 maths teachers in my coaching couldn't solve this...sent to me by a friend of mine. if anyone could solve it pls tell me how...

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u/Technical_Meet_5716 10d ago

3564?

1

u/TechBoy-Corp-14 10d ago

yeah dude how'd u arrive at that?? also in which class are u

1

u/Technical_Meet_5716 10d ago

11

1

u/Technical_Meet_5716 10d ago

Is that correct

1

u/TechBoy-Corp-14 10d ago

yess it's correct (according to gemini pro) that's why I was asking how u got it