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Try this one. A good one. From one of the previous CATs.
Consider a cylinder of height h cms and radius r= 2/pi cms (pi as in 3.142857 waala pi). A string of a certain length when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of n turns (in other words, string's length is the minimum length required to wind n complete turns).
(See the figure attached).
Find Vertical spacing between two consecutive turns.
Options - a) h/n b) h/(underroot n) (i.e. h/(n^1/2)) c) h/n square (i.e. h/(n^2)) d) Cannot be determined with this data (yayyyy).
Don't be scared of the language. Trust me aassaan sawaal hai. Issi liye yahaan post kiya.
Ummm.....I guess that is not right. Try imagining as if you are trying to unwind the string by holding its one end and rolling it until you reach the other end.
Wowwwww. That's insane job. I don't know if your answer's right or not. But the question was of a logic one. I mean the kind you see in aptitude exams. Will post the answer in a bit.
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Comments
You are correct bro. One more way for it is
n^2+n^3 which again comes out as (n+1)*n^2
Consider a cylinder of height h cms and radius r= 2/pi cms (pi as in 3.142857 waala pi). A string of a certain length when wound on its cylindrical surface, starting at point A and ending at point B, gives a maximum of n turns (in other words, string's length is the minimum length required to wind n complete turns).
(See the figure attached).
Find Vertical spacing between two consecutive turns.
Options -
a) h/n
b) h/(underroot n) (i.e. h/(n^1/2))
c) h/n square (i.e. h/(n^2))
d) Cannot be determined with this data (yayyyy).
Don't be scared of the language. Trust me aassaan sawaal hai. Issi liye yahaan post kiya.
Pretty straight forward
Voila
Try the next part then -
What is the length of the string?
Try imagining as if you are trying to unwind the string by holding its one end and rolling it until you reach the other end.
Let me know if it helps.
2n(2+sec((pi*h)/(4*n))) let me know if this is correct
Wowwwww. That's insane job. I don't know if your answer's right or not.
But the question was of a logic one. I mean the kind you see in aptitude exams.
Will post the answer in a bit.