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Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 1:53 pm
by Rhys Benjamin
9 x 8 x (8 + 3) - 6 was staring in the face there and everyone missed it?
Re: Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 1:55 pm
by Philip A
Rhys Benjamin wrote: ↑Fri Mar 31, 2023 1:53 pm
9 x 8 x (8 + 3) - 6 was staring in the face there and everyone missed it?
Different ways of thinking and solving in 30 seconds, so some people incl. experts are going to miss more obvious words/methods. I had SIXTEENS in the SEPTINES round.
Re: Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 5:03 pm
by Adam Dexter
Also 9x8 - 8 for 64 is a whoopsie... 8x8 anybody?
Re: Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 5:48 pm
by Gavin Chipper
Adam Dexter wrote: ↑Fri Mar 31, 2023 5:03 pm
Also 9x8 - 8 for 64 is a whoopsie... 8x8 anybody?
That's weird, because I did it exactly the same way - ((8*9-8)*2+3)*6=786.
Re: Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 6:11 pm
by Johnny Canuck
Nice 90% max-spotting efficiency from the corner today. Love Levi Roots and other guests who are clearly "in the game".
Re: Spoilers for Friday 31 March (Series 87, Prelim 50)
Posted: Fri Mar 31, 2023 11:30 pm
by David Williams
Gavin Chipper wrote: ↑Fri Mar 31, 2023 5:48 pm
Adam Dexter wrote: ↑Fri Mar 31, 2023 5:03 pm
Also 9x8 - 8 for 64 is a whoopsie... 8x8 anybody?
That's weird, because I did it exactly the same way - ((8*9-8)*2+3)*6=786.
Presumably you start by multiplying the two biggest numbers. 72. If you multiply that by 6*2 you have 864. 78 to find, which is 6*13, so you need to get 8*9*2-13 and multiply it by 6. You have an unused 8 and 3. 13 is 2*8-3. QED.