JoeyB Posted 27 September 2009 Posted 27 September 2009 can you make the number 29 using all of the numbers below? 1, 2, 7, 9. I dont just want "no" as an answer i need to be shown the answer as its for me little bro's homework and i cant do it. Not even sure if it can be done!
AjcW Posted 27 September 2009 Posted 27 September 2009 Come on Neil, bit of countdown practice for you
JoeyB Posted 27 September 2009 Author Posted 27 September 2009 No. Yeah, that was really funny that! cant stop laughing!
AoWW Posted 27 September 2009 Posted 27 September 2009 Maths is far from being my strong point but, no, I don't think it can be done. Unless you can use the same number more than once. (Waits to be proven wrong!) How old is your ickle bro? (Would give a clue how complex it's likely to be!)
JoeyB Posted 27 September 2009 Author Posted 27 September 2009 Maths is far from being my strong point but, no, I don't think it can be done. Unless you can use the same number more than once. (Waits to be proven wrong!) How old is your ickle bro? (Would give a clue how complex it's likely to be!) Year 10! Im not sure it can be done , and i think you have to use each number once. hmmm could it be a trick question in homework? silly teachers!
Asha Posted 27 September 2009 Posted 27 September 2009 can you make the number 29 using all of the numbers below?1, 2, 7, 9. I dont just want "no" as an answer i need to be shown the answer as its for me little bro's homework and i cant do it. Not even sure if it can be done! It's actually really easy. 1+7=8 2+9=11 8+11=29.
AoWW Posted 27 September 2009 Posted 27 September 2009 Year 10!Im not sure it can be done , and i think you have to use each number once. hmmm could it be a trick question in homework? silly teachers! Probably a typo in the numbers they gave! It's actually really easy.1+7=8 2+9=11 8+11=29. but 8+11 is 19!
Asha Posted 27 September 2009 Posted 27 September 2009 Probably a typo in the numbers they gave! but 8+11 is 19! Knew someone would spot it. Just wanted JoeyB to get excited and tell his brother to put that down.
lavrentis Posted 27 September 2009 Posted 27 September 2009 It's actually really easy.1+7=8 2+9=11 8+11=29. That's 19 but I would say that isn't possible. Got 28 and 30 a few times and for Year 10 stuff that's hard if possible.
purpleronnie Posted 27 September 2009 Posted 27 September 2009 It's actually really easy.1+7=8 2+9=11 8+11=29.
dimmerchant Posted 27 September 2009 Posted 27 September 2009 7 - 1 = 6 6 squared = 36 36 - 9 = 27 27 + 2 = 29
purpleronnie Posted 27 September 2009 Posted 27 September 2009 Knew someone would spot it.Just wanted JoeyB to get excited and tell his brother to put that down. Yeah right.
Asha Posted 27 September 2009 Posted 27 September 2009 Let's try again then. 1,2,7,9 2 squared = 4 4x9 = 36 - 7 =29 Oh, and times it by 1.
AoWW Posted 27 September 2009 Posted 27 September 2009 Let's try again then.1,2,7,9 2 squared = 4 4x9 = 36 - 7 =29 Nice try, but you haven't used the 1. Edit: Ok, maybe you have now!
Asha Posted 27 September 2009 Posted 27 September 2009 Nice try, but you haven't used the 1. x1 the answer.
dimmerchant Posted 27 September 2009 Posted 27 September 2009 Surely year 10s are capable/allowed to square. Thats the only solution I reckon.
lavrentis Posted 27 September 2009 Posted 27 September 2009 Surely year 10s are capable/allowed to square. Thats the only solution I reckon. Yeah they are but surely its using the same number twice.
dimmerchant Posted 27 September 2009 Posted 27 September 2009 Yeah they are but surely its using the same number twice. Fair point, we need to see the T&Cs of this question.
JoeyB Posted 27 September 2009 Author Posted 27 September 2009 Yeah i thougth squaring would could as using the same number twice. somehow i think he has either copied it down wrong or the teacher is being a miserable twat and given them an unanswerable question!
James. Posted 27 September 2009 Posted 27 September 2009 Pretty certain that can't be done if you're only allowed to add, subtract, multiply and divide.
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