I’ve gotten many hard math questions.
“Grandma and Grandpa together are 140 years old, and Grandpa is twice as old as Grandma was when Grandpa was as old as Grandma is now. “
what is the hardest math question you had
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Apr 2, 2018
0
#22
hitthepin wrote:
I’ve gotten many hard math questions.
“Grandma and Grandpa together are 140 years old, and Grandpa is twice as old as Grandma was when Grandpa was as old as Grandma is now. “
Let x = Grandpa's age and y = Grandma's age.
x + y = 140
x = 2(y-(x-y)) = 4y - 2x
4y - 3x = 0
x + y = 140
3x = 4y
1.75x = 140
x = 80
x + y = 140
y = 60
9 + 10
chesster3145 wrote:
hitthepin wrote:
I’ve gotten many hard math questions.
“Grandma and Grandpa together are 140 years old, and Grandpa is twice as old as Grandma was when Grandpa was as old as Grandma is now. “
Let x = Grandpa's age and y = Grandma's age.
x + y = 140
x = 2(y-(x-y)) = 4y - 2x
4y - 3x = 0
x + y = 140
3x = 4y
1.75x = 140
x = 80
x + y = 140
y = 60
i am pretty sure hitthepin was just trolling/joking as that is incredibly easy for a hard math question
On one side of my family my Grandma was 20 and my Grandpa was 80. I guess he had it pretty sweet. But on the other side of my family my Grandmammy was 80 and my Granddaddy was 20. She reckoned she had it even sweeter. Apparently 20 goes into 80 more times than 80 goes into 20.
Apr 5, 2018
0
#28
sadkid2008 wrote:
chesster3145 wrote:
hitthepin wrote:
I’ve gotten many hard math questions.
“Grandma and Grandpa together are 140 years old, and Grandpa is twice as old as Grandma was when Grandpa was as old as Grandma is now. “
Let x = Grandpa's age and y = Grandma's age.
x + y = 140
x = 2(y-(x-y)) = 4y - 2x
4y - 3x = 0
x + y = 140
3x = 4y
1.75x = 140
x = 80
x + y = 140
y = 60
i am pretty sure hitthepin was just trolling/joking as that is incredibly easy for a hard math question
Haha. You would be surprised to see just how many people fail completely to understand the question.
hitthepin wrote:
sadkid2008 wrote:
chesster3145 wrote:
hitthepin wrote:
I’ve gotten many hard math questions.
“Grandma and Grandpa together are 140 years old, and Grandpa is twice as old as Grandma was when Grandpa was as old as Grandma is now. “
Let x = Grandpa's age and y = Grandma's age.
x + y = 140
x = 2(y-(x-y)) = 4y - 2x
4y - 3x = 0
x + y = 140
3x = 4y
1.75x = 140
x = 80
x + y = 140
y = 60
i am pretty sure hitthepin was just trolling/joking as that is incredibly easy for a hard math question
Haha. You would be surprised to see just how many people fail completely to understand the question.
Well, then, nice try: unfortunately you’ve got the wrong guy here. 
Here’s a cool one:
Which is larger? 8 ^ 8! or (8 ^ 8)!
chesster3145 a écrit :
Already proven, but it took a professional mathematician seven years, and that’s only the formal proof. The proof itself is far too long and technical to fit into a forum post, so asking about it on here is pretty pointless.
I know that it has been proven but good luck if you get that in a test.
chesster3145 a écrit :
Here’s a cool one:
Which is larger? 8 ^ 8! or (8 ^ 8)!
My guess would be the second one.
JamesAgadir wrote:
chesster3145 a écrit :
Already proven, but it took a professional mathematician seven years, and that’s only the formal proof. The proof itself is far too long and technical to fit into a forum post, so asking about it on here is pretty pointless.
I know that it has been proven but good luck if you get that in a test.
Not going to happen: Elliptic curves and Galois theory are a few years away for me. 
Apr 29, 2018
0
#38
Chesster, the first one is equal to 322000 and the second one is so large that it maxed out my calculator. But 8^8 is already over 16000000.
hitthepin wrote:
Chesster, the first one is equal to 322000 and the second one is so large that it maxed out my calculator. But 8^8 is already over 16000000.
Sorry, messed up the problem. I think the real one is with 2^8 instead of 8^8.
Maybe that doesn't work, but it seems good.
Anyway the hardest problems I've had are applied differential equation problems (basically word problems asking you to use calculus, but differential equations are an annoying form of calculus haha I'll say it like that).
applied differential calculus is pretty easy.
well it depends on the problem but i would say most of them are pretty easy, what kind have you done that are hard?