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A man takes a step forward with probabil...

A man takes a step forward with probability 0.4 and one step backward with probability 0.6, then the probability that at the end of eleven steps he is one step away from the starting point is

A

`overset (11) C_(5) xx (0.48)^(5)`

B

`overset (11) C_(6) xx (0.24)^(5)`

C

`overset (11) C_(5) xx (0.12)^(5)`

D

`overset (11) C_(6) xx (0.72)^(6)`

Text Solution

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The correct Answer is:
B
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HIMALAYA PUBLICATION-COMMON ENTRANCE TEST -2015-QUESTION BANK
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  7. The mean devision from the data 3,10,10,4 ,7,10,5 is

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  8. The probability distribution of X is : {(X:,0,1,2,3),(P(X),0.2,k,k,...

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  9. If the function g(x) is defined by g(x) = (x^(200))/(200) +(x^(199...

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  10. A box contains 6 red numbers from 1 through 6 and 4 white marbles ...

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  11. lim(x rarr 0) (1- cos x)/(x^(2)) is :

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  13. If f(x)=2x^(2), find (f(3.8)-f(4))/(3.8-4) :

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  15. A balloon which always remains spherical is being inflated by pumping ...

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  16. int (sin^(2)x)/(1+cos x) dx is equal to

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  17. Evaluate : int e^(x) ((1 + sin x)/( 1+ cos x)) dx

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  18. If 1, w, w^(2) are three cube roots of unity, then (1 - w+ w^(2)) (1 +...

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  19. Solve for x tan^(-1) ((1-x)/(1+x))=(1)/(2) tan^(-1)x, x gt 0

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