A bag contains 5 white balls, 7 red ball...

A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue balls. One ball is drawn at random from the bag. What is the probability that the ball drawn is: white or blue.

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R G PUBLICATION-MODEL PAPER 1-EXERCISE

If A,B,C are the interior angles of ABC, then prove that cos((A+B)/2)=...
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Prove that sqrt5 is irrational.
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If alpha and beta are the two zeroes of the quadratic polynomial x^2-3...
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Prove that (1-sintheta)/(1+sintheta)=(sectheta-tantheta)^2.
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Prove that in a right traiangle, the square of the hypotemuse is equal...
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Show that any positive even integer is of the form 6q, 6q+2 ,6q+4.
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In the figure ,DeltaABC is right angles at B, BC=7cm and AC-AB=1cm. Fi...
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In figure D,E,F are midpoints of sides BC,CA,AB respectively of DeltaA...
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Find the coordinates of a point A,where AB is the diameter of a circle...
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2 cubes each of volume 64cm^3 are joined end to end.Find the surface a...
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Prove that parallelogram circumscribing a circle is a rhombus.
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In what ratio does the x-axis divide the line segment joining the poin...
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If all the sides of a parallelogram touch a circle, show that the para...
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AB and CD are two parallel tangents to a circle with centre O. ST is a...
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The angle of elevation of an aeroplane from a point A on the ground is...
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A well of diameter 3 m is dug 14 m deep.They earth taken out of it has...
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Without using trigonometric tables, evaIuate the following:sec37^@/(co...
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A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...
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A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...
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A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...
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