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The probability of India winning a test match against West Indies is 1/2. Assuming independence from match to match, find the probability that in a match series Indias second win occurs at the third test.

A

`1/8`

B

`1/4`

C

`1/2`

D

`2/3`

Text Solution

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The correct Answer is:
B
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MODERN PUBLICATION-UNIT TEST PAPER NO. 6 (THREE - DIMENSIONAL GEOMETRY, VECTORS & PROBABILITY)-Select the correct answer
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  3. Let veca=2hati+hatj-2hatk and vecb=hati+hatj. If vecc is a vector such...

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  4. s. Given two vectors are i- j and i+ 2j the unit,vector coplanar with ...

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  5. The unit vector which is orthgonal to the vector veca=3hati+2hatj+6hat...

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  6. Let veca,vecb,vecc be the three vectors such that veca.(vecb+vecc)+ve...

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  7. The pair of lines whose direction cosines are given by : 3l+m+5n=0,6...

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  8. The length of the perpendicular from P(1,0,2) on the line (x+1)/(3)=(y...

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  9. The lines whose vector equations are : vecr=veca+tvecb,vecr=vecc+t'v...

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  10. If from each of the three boxes containing 3 white and 1 black, 2 whit...

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  11. Five horses are in a race. Mr. A selects two of the horses at random ...

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  12. The probability of India winning a test match against West Indies i...

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  13. The probability that A speaks truth is (4)/(5), while this probability...

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  14. If E and F are events with P(E) le P(F) and P(E cap F) gt 0, then :

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  15. If vecE and vecF are complementary events of events E and F respective...

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  16. If veca, vecb, vecc are vectors such that veca.vecb=0 and veca + vecb ...

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  17. If veca satisfies vecaxx(hati+2hatj+hatk)=hati-hatk" then " veca is eq...

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  18. If veca, vecb, vecc are non-coplanar unit vectors such that vecaxx(vec...

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  19. Two system of rectangular axes have the same origin. If a plane cuts t...

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  20. Dialing a telephone number, a man forgot the last two digits and remem...

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