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A box contains 4 orange and 4 green ball...

A box contains 4 orange and 4 green balls, another box contains 3 orange and 5 groen balls, one of the two box is selected at random and a ball is drawn from the box, which is found to be orange. Find the probability that the ball is drawn from the first box.

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The correct Answer is:
`(4)/(7)`
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ARIHANT PRAKASHAN-VERY SIMILAR TEST 1 -Section B
  1. In bag A, there are 5 white and 8 red balls, in bag B, 7 white and 6 ...

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  2. Prove the following : [[x+4,2x,2x],[2x,x+4,2x],[2x,2x,x+4]]-(5x+4)(4-x...

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  3. If A=[(2,0,1),(2,1,3),(1,-1,0)], then find A^(2)-5A+4I and hence find ...

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  4. If A= [{:(1,-1),(2,-1):}],B=[{:(a,1),(b,-1):}]and(A+B)^(2)=A^(2)+B^(2)...

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  5. A box contains 4 orange and 4 green balls, another box contains 3 oran...

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  6. If y=sin^(-1)(2x sqrt(1-x^(2))), then find (dy)/(dx) and determine its...

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  7. If y=(x+(1)/(x+(1)/(x+ . . .oo))) find (dy)/(dx), the rhs being a vali...

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  8. Find a point on the curve y=(x-2)^(2) at which the tangent is parall...

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  9. Find the intervals in which the following functions is increasing or d...

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  10. Examine the applicability of mean value theorem for the function f(...

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  11. Evaluate the integral int(0)^(2pi)(1)/(1+e^(sinx))dx.

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  12. Evaluate int log (1+x^2)dx

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  13. Find the area of the region enclosed by the curve y=x e^(x^(2), the ...

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  14. Solve (dy)/(dx)+2y =6e^(x).

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  15. Find the differential equation of the family of curves given by x^(2...

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  16. Prove by vector method that the diagonals of a parallelogram bisect ea...

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  17. The scalar product of the vector veca=hati +hatj +hatk with a unit ve...

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  18. Find the acute angle between the lines passing through (-3, -1, 0), (2...

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  19. Find the equation of the plane passing through the intersection of the...

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  20. Find the coordinates of the point, where the line (x+1)/(2) = (y+2)/(3...

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