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1.

If books bought at prices ranging from Rs. 200 to 350 are sold at from Rs. 300 to 425, what is the greatest possible profit that might be made in selling eight books

Answer» CP-> 200-350
SP-> 300-425
Profit=SP-CP
maximum profit=425-200=225
Profit of 8 books=225*8=1800
Option D is correct.
Discussion
2.

Let S be a non-empty subset of R. Consider the following statement:P: There is a rational number `x in S`such that `x"">""0`.Which of the following statements is the negation of the statement P ?There is no rational number `x in S`such that `xlt=0`(9)Every rationalnumber `x in S`satisfies `xlt=0`(18)`x in S`and `xlt=0=>x`(27) is notrationalThere is arational number `x in S`such that `xlt=0`(36)

Answer» `x in S`
`x > 0`
`x in S; x <= 0`
option 2 is correct
Discussion