goformit100
  • goformit100
A boy has 3 library tickets and 8 books of his interest in the library. Of these 8, he does not want to borrow Mathematics Part II, unless Mathematics Part I is also borrowed. In how many ways can he choose the three books to be borrowed?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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yrelhan4
  • yrelhan4
Various cases possible are: (i) When Maths part-I is borrowed: Here, the boy may borrow maths part-II. So, he has to select 2 books out of the remaining 7 books, which can be done in ways. (ii) When maths part-I is not borrowed: Here, the boy will not borrow maths part-II. So, he has to select 3 books from the remaining 6 books, which can be done in ways. ∴Total number of ways = + = 21 + 20 = 41
yrelhan4
  • yrelhan4
@DLS
goformit100
  • goformit100
Thanks

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DLS
  • DLS
he is right

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