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1. there are 4 coins with values 1,2,4, and 8. How many different amounts can be made with one or more of the 4 coins?
Each coin can ONLY BE USED ONCE.
Is it 14?
there are 4 1 coin combinations.
There are 3+2+1 2 coin combos
There are 4 3 coin combos(1,2,4),(1,4,8),(1,2,8),(2,4,8)
There is 1 4-coin combo (1,2,4,8)
thus there are 4 + 6 + 4 + 1(15 combos)
Am I right?
2.x mod 5 =1
x mod 7 =1
Find the least number x > 10 that satisfies these 2 equations. Is it 71?
Last edited by Mathegocart (2016-08-02 11:32:34)
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha
{Gods rejoice at those places where ladies are respected.}
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{1}Vasudhaiva Kutumakam.{The whole Universe is a family.}
(2)Yatra naaryasthu poojyanthe Ramanthe tatra Devataha
{Gods rejoice at those places where ladies are respected.}
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Thickhead thanks for helping me gain a better understanding of similar combo. problems like these.
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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Hi;
Bobbym 43 % 5 = 3 not 1
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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You have 2x not x, so it is 2 x 43 = 86 which leaves a remainder of 1 when divided by 5.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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You have 2x not x, so it is 2 x 43 = 86 which leaves a remainder of 1 when divided by 5.
bobbym that was my indicator for the 2nd question. 2.
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
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Oh! I thought that was 2x, I am sorry.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Oh! I thought that was 2x, I am sorry.
bobbym that is ok I have major oversights sometimes.
The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.
Offline
That was one you can use the CRT on.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
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