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Started By
Message
Someone explain this math brain teaser to me
Posted on 5/19/19 at 1:10 pm
Posted on 5/19/19 at 1:10 pm
quote:
Suppose you can purchase doughnuts in boxes of 6, 9 and 20.what is the greatest number of donuts you cannot purchase.
Seems like for starters you couldn't purchase literally any prime number. So What am I missing? And they also spelled donuts differently
. You can see the answer below, 43.
Feel like a retard. Maybe I should ask a cop
23
Posted on 5/19/19 at 1:10 pm to castorinho
350
Posted on 5/19/19 at 1:12 pm to castorinho
Math is for smart people, ain’t nobody got time for that.
Posted on 5/19/19 at 1:13 pm to castorinho
The question doesn’t make sense.
Posted on 5/19/19 at 1:14 pm to Lsupimp
You know how many times I’ve had to answer a question like that in my life?
0
0
Posted on 5/19/19 at 1:14 pm to castorinho
I don’t know how they got the answer but the prime number thing doesn’t work. For example 29 is a prime number and you can buy 29 donuts
Posted on 5/19/19 at 1:15 pm to castorinho
I can't purchase a million doughnuts. I can purchase 43.
Posted on 5/19/19 at 1:15 pm to castorinho
Infinity, till the donut allowance runs out or you die from a heart attack?
Posted on 5/19/19 at 1:16 pm to castorinho
Your math skills have always been subpar. But that's not surprising.
Posted on 5/19/19 at 1:20 pm to TheIndulger
quote:Yeah, I'm an idiot. My brain was thinking from a multiplication standpoint, when we're dealing with addition
I don’t know how they got the answer but the prime number thing doesn’t work. For example 29 is a prime number and you can buy 29 donuts
Posted on 5/19/19 at 1:23 pm to castorinho
You can buy 42 doughnuts..4x9, 1x6
You can buy 44 doughnuts..1x20, 2x9, 1x6
You can buy 44 doughnuts..1x20, 2x9, 1x6
Posted on 5/19/19 at 1:24 pm to castorinho
eta; nvm
This post was edited on 5/19/19 at 1:25 pm
Posted on 5/19/19 at 1:25 pm to castorinho
(no message)
This post was edited on 5/19/19 at 1:26 pm
Posted on 5/19/19 at 1:26 pm to HailHailtoMichigan!
quote:It says highest number you can't buy.
The question doesn't have enough info to answer.
Can't I just buy an unlimited number of box of 20 doughnuts?
Meaning that any number higher than 43 will be some combination of 20, 6 and 9
Posted on 5/19/19 at 1:26 pm to castorinho
quote:Ya, misread it
It says highest number you can't buy.
Posted on 5/19/19 at 1:27 pm to cssamerican
I can’t believe the answer is 43.
Posted on 5/19/19 at 1:29 pm to HailHailtoMichigan!
It’s not that difficult. I’m not taking the time to figure it out, but for example, you can’t buy 19 donuts, because 9+6 is 15 and you can’t buy only 4 more; 6+6+6 is 18 and you can’t buy only one more. It’s asking for the highest number that you are unable to purchase.
Posted on 5/19/19 at 1:29 pm to HailHailtoMichigan!
It has enough info, it’s just poorly worded. Should have said largest exact amount of doughnuts that can’t be bought, or something to that nature.
Posted on 5/19/19 at 1:29 pm to olgoi khorkhoi
quote:
It’s asking for the highest number that you are unable to purchase
No fricking shite?
Posted on 5/19/19 at 1:31 pm to ThatMakesSense
quote:
You can buy 44 doughnuts..1x20, 2x9, 1x6
I can by 44 doughnuts and then go outside to where the homeless person is begging for food.
Then throw 1 doughnut on the ground and stomp it into the dirt.
Now I have 43 doughnuts.
Your move
This post was edited on 5/19/19 at 6:12 pm
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