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Each coefficient in the equation a x^2+b...

Each coefficient in the equation `a x^2+b x+c=0` is determined by throwing an ordinary six faced die. Find the probability that the equation will have real roots.

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To find the probability that the quadratic equation \( ax^2 + bx + c = 0 \) has real roots, we need to analyze the condition for real roots. The roots of the quadratic equation are real if the discriminant \( D \) is non-negative, which is given by: \[ D = b^2 - 4ac \geq 0 \] This implies: ...
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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  4. Prove that a^3+b^3+c^3-3abc=1/2(a+b+c){(a-b)^2+(b-c)^2+(c-a)^2}

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  13. An urn contains twenty white slips of paper numbered from 1 through 20...

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  14. An integer is chosen at random from the numbers ranging from 1 to 50. ...

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  15. A basket contains 20 apples and 10 oranges out of which 5 apple and 3 ...

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  16. One cards are drawn from a pack of 52 cards. What is the probability t...

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  17. If A and B are any two events such that P(AuuB)=1/2 and P( A )=2/3 , ...

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  18. Let A ,B ,C be three events such that P(A)=0. 3 ,P(B)=0. 4 ,P(C)=0. 8 ...

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  19. A and B are two non-mutually exclusive events. If P(A)=1/4, P(B)=2/5 a...

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  20. If E and F are events such that P(E) = 1/4, P(F) =1/2 and P(E and F)...

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