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Logical Reasoning
General Mental Ability
Fifty one books are arranged from left to right in order of increasing prices. The price of each book differs by Rs. 2 from that of each adjacent book. For the price of the book at the extreme right a buyer can buy the middle book and an adjacent one. Then, which of the following statements is correct ?
a) The adjacent book referred to is at the left of the middle magazine.
b) The middle book sells for Rs. 56
c) The most expensive book sells for Rs.116
d) None of the above statements is correct.
Read Solution (Total 2)
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- ans: a) The adjacent book referred to is at the left of the middle magazine.
>because image the first book's cost start fro Rs.2.
>The the cost of the 51st book will be 51*2=102Rs.
>The the middle magazine will be (51+1)/2=26st book(since its odd no. of books)
> hence cost of the 26st book = 26*2 = 52Rs.
> Therefore if we take left magazine as the adjacent book. Then the cost of 25th magazine is 50Rs.
>adding both magazines cost(i.e 25th & 26th)= 50 + 52 = 102(cost of last magazine)
- 10 years agoHelpfull: Yes(2) No(0)
- d.none of the above statements is correct..
middle book sells for 52
most expensive book costs 102
.............. - 10 years agoHelpfull: Yes(0) No(0)
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