Pulsified333
  • Pulsified333
Assume that you select digits from the set {2,3,5,6,7,8} to form a number between 20 and 800. (1) How many such numbers can be formed if digits are not repeated? (2) How many such numbers can be formed if digits can be repeated?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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dan815
  • dan815
all 2 digit numbers are above 20 so u are good there then all 3 digit numbers that dont start with 8 are below 800
dan815
  • dan815
no repeition 2 digit numbers 6*5 3 digit numbers with out 8 in beginning 5*5*4
dan815
  • dan815
with repetition alloved 2 digit numbers 6*6 3 digit numbers 5*6*6

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More answers

dan815
  • dan815
|dw:1441335919908:dw|
Pulsified333
  • Pulsified333
oh that makes sense now :D. I got it right . By the way what you said helped on the other problem because I got it right. :D
dan815
  • dan815
which one again?
Pulsified333
  • Pulsified333
it was the base 8 one
dan815
  • dan815
oh okay thats good!
Pulsified333
  • Pulsified333
the answer was 53602
dan815
  • dan815
u understand bases now?
dan815
  • dan815
i cann check for u wait
Pulsified333
  • Pulsified333
yeah I think I do
Pulsified333
  • Pulsified333
was it right?
dan815
  • dan815
yeah
dan815
  • dan815
sry i went off writing a program hehe
Pulsified333
  • Pulsified333
:D

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