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Can you try calculating 101 * 70 in your head?
by mkirsten 11mo ago
Can you try calculating 101 * 70 in your head?
- hacker_homie 11mo agoI think therefore I am calculator?
- ang_cire 11mo agoUm, that's really easy to do in your head, there's no carrying or anything? 7,070 7 * 101 = 707 * 10 = 7,070 And computers don't brute-force multiplication either, so I'm not sure how this is relevant to the comment above?
- polotics 11mo agoI think it is very relevant, because no brute-forcing is involved in this solution.
- nutjob2 11mo agoThat's not true, the 'brute force' part is searching for a shortcut that works.
- numpy-thagoras 11mo agoThe brute force got reduced down to fast heuristics, like Arthur Benjamin's Mathemagics.
- jabbywocker 11mo agoIt’s almost like you’re proving the point of his reply…
- johnisgood 11mo agoVery easy to solve, just like it is easy to solve many other ones once you know the tricks. I recommend this book: https://www.amazon.com/Secrets-Mental-Math-Mathemagicians-Calculation/dp/0307338401 https://www.amazon.com/Secrets-Mental-Math-Mathemagicians-Ca...
- jabbywocker 11mo agoCompletely missing the point on purpose?
- johnisgood 11mo agoElaborate.
- jabbywocker 11mo agoyou don’t solve it by brute forcing possible solutions until one sticks
- johnisgood 11mo agoYeah, read it in another comment. Why do you think doing calculations in your head is brute-forcing? Many people can do it flawlessly, without even knowing of these "tricks". They just know. Is that brute-force?
- jabbywocker 11mo ago[flagged]
- johnisgood 11mo agoYou are not replying to what I said. I am not going to repeat myself, see the parent comment you replied to.
- Izkata 11mo agoYour original comment completely missed the point of what it was replying to, you phrased it like you were correcting them but you were actually in agreement and didn't seem to realize it. They tried to clarify when you asked and when you responded you assumed they had the opposite viewpoint from what they actually have.
- froggit 11mo agoI can absolutely try this. Doesn't mean i'll solve it. If i solve it there's no guarantee i'll be correct. Math gets way harder when i don't have a legitimate need to do it. This falls in the "no legit need" so my mind went right to "100 * 70, good enough."
- NetMageSCW 11mo agoOr you could do (100 + 1)*70 => 100*70 + 1*70