solve??????
Asked by
| 9th Sep, 2008,
09:19: PM
Expert Answer:
n+1cr and ncr+1 both are positive so (k2-3) 0 i.e. | k |
3
and also n+1r and n
r+1 ==> n
r+1 and r
0
(k2-3) = n+1cr / ncr+1 = (n+1) (r+1) / (n+1-r) (n-r)
(n+1) / (n+1-r) 1 and (r+1) / (n-r)
(r+1)
1
(k2-3) can be greater then 1 or less then 1 depending on the values of n and r
so option c is incorrect. and a,b,d are right answers.
Answered by
| 17th Dec, 2008,
01:11: AM
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