Let n be a positive integer. Let A=n∑k=0(−1)k nCk[(12)k+(34)k+(78) – InterviewSolution

1.	Let n be a positive integer. Let A=n∑k=0(−1)k nCk[(12)k+(34)k+(78)k+(1516)k+(3132)k]. If 63A=1−1230, then n is equal to
Answer» Let $n$ be a positive integer. Let $A = n \sum k = 0 (- 1)^{k}^{n} C_{k} [{(\frac{1}{2})}^{k} + {(\frac{3}{4})}^{k} + {(\frac{7}{8})}^{k} + {(\frac{15}{16})}^{k} + {(\frac{31}{32})}^{k}] .$ If $63 A = 1 - \frac{1}{2^{30}},$ then $n$ is equal to

Discussion

No Comment Found

Related InterviewSolutions

The number of ways of choosing 2 cards from a pack of 52 where atleast one face card is choosen
Let P(3,3) be a point on the hyperbola, x2a2−y2b2=1. If the normal to it at P intersects the x−axis at (9,0) and e is its eccentricity, then the ordered pair (a2,e2) is equal to
P speaks truth in 75% cases while Q in 90%.in what % r they likely to contradict each other in stating the same fact .? Do u think B is true Do
If f(x) has the second order derivative at x = c such that f '(c) = 0 and f ''(c) > 0, then c is a point of _______________.
An A.P. consists of 43 terms, if the sum of five middle-most terms is 195, then the sum of the A.P. is
Find the angle between two vectors a and b with magnitudes √3 and 2 respectively, having a.b=√6
If y={x}[x], then 3∫0y dx is equal to,where {.} and [.] are fractional part function and greatest integer function respectively.
The graph of f(x)=−|log(x−3)|+3 will be
1∫0ex⋅x(1+x)2dx is equal to
What is a set and list all formulas of set.