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The chances to fail in Physis are 20% an...

The chances to fail in Physis are 20% and the chances to fail in Mathematics are 10%. What are the chances to fail in atleast one subject ?

A

0.28

B

0.38

C

0.72

D

0.82

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The correct Answer is:
A
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In an examination, 53% of the candidates failed in science and 48% failed in mathematics. If 40% failed in both subjects, what percentage passed in both subjects? एक परीक्षा में 53% छात्र विज्ञान में अनुत्तीर्ण हुए तथा 48% गणित में अनुत्तीर्ण रह गए | यदि 40% दोनों विषयों में अनुत्तीर्ण रहे, तो दोनों विषयों में कितने प्रतिशत उत्तीर्ण हुए?

TARGET PUBLICATION-PROBABILITY-CRITICAL THINKING (ADDITION THEOREM AND CONDITIONAL PROBABILITY)
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  2. If A and B ar two events such that P(A uuB) =(5)/(6) ,P(A nnB) =(...

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  3. The chances to fail in Physis are 20% and the chances to fail in Mathe...

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  4. Find the probability that a leap year will have 53 Friday or 53 Sat...

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  5. Three athletes A, B and C participate in a race competition. The prob...

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  6. There are two childrens in a family. The probability that both of the...

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  7. There are 20 cards. Ten of these cards have the letter "I" printed on ...

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  8. A letter is taken from the word MULTIPLE and another letter is taken ...

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  9. In a single throw of two dice, the probability of getting a total of ...

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  10. There are two boxes. One box contains 3 white balls and 2 black balls...

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  11. A class consists of 80 students 25 of them are girls and 55 boys . If...

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  12. If A and B are two events and P(A) = (3)/(8) . P(B) =(1)/(2), P(A ...

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  13. If P(AnnB)=1/2,P( A nn B )=1/3, P(A)=p , P(B)=2p , then find the ...

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  14. If M and N are any two events, then the probability that exactly one o...

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  15. Two events Aa n dB have probabilities 0.25 and 0050, respectively. The...

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  16. Out of 80 students in a class , 30 passed in Mathematices , 20 in E...

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  17. If P(E(1)) = p(1) and P(E(2)) = p(2) and E(1) and E(2) are indepen...

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  18. The probability that a man will live 10 more years is 1//4 and the pro...

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  19. If the probability that A and B will die within a year are p and q res...

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  20. A speaks truth in 60% of cases, while B in 90% of the cases. In what p...

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