kanwal32
  • kanwal32
S={0,2,4,6,8} number of 4 digit numbers divisble by 5 using S repetition allowed
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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kanwal32
  • kanwal32
|dw:1434107799743:dw|
kanwal32
  • kanwal32
|dw:1434107953036:dw|
kanwal32
  • kanwal32
@ganeshie8 plss needed ur hlp

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kanwal32
  • kanwal32
@nincompoop
ganeshie8
  • ganeshie8
That looks good! \[4*5*5*1\]
kanwal32
  • kanwal32
but answer in the text book is 76
kanwal32
  • kanwal32
first i used the same thing u used
kanwal32
  • kanwal32
but answer is 76
kanwal32
  • kanwal32
there is overcounting somewhere
kanwal32
  • kanwal32
@ganeshie8 hlp
kanwal32
  • kanwal32
here all number would be divisble by 2 also
kanwal32
  • kanwal32
@hartnn
kanwal32
  • kanwal32
are u stuck @ganeshie8
kanwal32
  • kanwal32
is also did the same thing as u did but i closed the question the again wrote but answer is 80
kanwal32
  • kanwal32
should i give the options
kanwal32
  • kanwal32
The 1 st part was the number of such numbers which are even using S
kanwal32
  • kanwal32
|dw:1434108747377:dw|
kanwal32
  • kanwal32
4*5*5*5
kanwal32
  • kanwal32
but amswer is given as 404
kanwal32
  • kanwal32
answer
kanwal32
  • kanwal32
@nincompoop
kanwal32
  • kanwal32
@ganeshie8 are u there
kanwal32
  • kanwal32
@Abhisar
Sachintha
  • Sachintha
Can it be done using permutations?
kanwal32
  • kanwal32
yes it is a permutation and combination ques
Sachintha
  • Sachintha
Why have you omitted zero? It should be included. Isn't it @ganeshie8 ?
ganeshie8
  • ganeshie8
\(4*5*5*1\) is the correct answer for the main question your textbook is wrong
kanwal32
  • kanwal32
i was thinking so are u sure
ganeshie8
  • ganeshie8
also \(4*5*5*5\) is the correct answer for your later question your textbook is wrong again, just make sure you're looking at the correct chapter for answers
kanwal32
  • kanwal32
but i dont think so
Sachintha
  • Sachintha
Got it. First number shouldn't include zero. I am dumb. :D
ganeshie8
  • ganeshie8
is there a reason you don't think so other than the textbook answer
kanwal32
  • kanwal32
cause there are three parts of the question and the first part is right
ganeshie8
  • ganeshie8
whats the first part
kanwal32
  • kanwal32
no mcq
kanwal32
  • kanwal32
repetiton not allowed
ganeshie8
  • ganeshie8
did you get 24 for that ?
kanwal32
  • kanwal32
|dw:1434109791357:dw|
kanwal32
  • kanwal32
96
kanwal32
  • kanwal32
|dw:1434109879582:dw|
kanwal32
  • kanwal32
|dw:1434109911990:dw|
kanwal32
  • kanwal32
repetition not allowed
kanwal32
  • kanwal32
@ganeshie8 can u ask for help from somebody who is good at premutation because i think the textbook is right
ganeshie8
  • ganeshie8
|dw:1434110056441:dw|
kanwal32
  • kanwal32
|dw:1434110134743:dw|