a box contains 20 electric bulbs A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective, is - A. $$\frac{4}{19}$$ B. . $12.64
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Two bulbs are chosen at random from this box. The probability that at least one of these is defective is. Please remember that Maximum portability is 1. So we can get total probability of non defective bulbs and subtract it form 1 to get total probability of defective bulbs. 1. What is the .
A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective, is - A. $$\frac{4}{19}$$ B. .
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It is known that a box of 200 electric bulbs contains 16 defective bulbs. One bulb is taken out at random from this box. What is the probability that it is a non-defective bulb?A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is: A signal which can be .
Your answer is almost right. When you pick one defective bulb and one non-defective bulb, you need to count the number of ways to pick the non-defective bulb as well. So you can pick 1 .If 10 different balls are to be placed in 4 distinct boxes at random, then the probability that two of these boxes contain exactly 2 and 3 balls is: HARD Quantitative Aptitude > Arithmetic > . Out of 250 bulbs in a box, 35 bulbs are defective. One bulb is taken out at random from the box. Find the probability that the drawn bulb is not defective.
Solution for A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. What is the probability that at least.
Two bulbs are chosen at random from this box. The probability that at least one of these is defective is. Please remember that Maximum portability is 1. So we can get total probability of non defective bulbs and subtract it form 1 to get total probability of defective bulbs. 1. What is the probability of getting a sum 9 from two throws of dice.A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective, is - A. $$\frac{4}{19}$$ B. $$\frac{7}{19}$$ C. $$\frac{12}{19}$$ D. $$\frac{21}{95}$$ E. None of these. Answer: Option B
It is known that a box of 200 electric bulbs contains 16 defective bulbs. One bulb is taken out at random from this box. What is the probability that it is a non-defective bulb?A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is: A signal which can be green or red with probability 4 5 and 1 5 respectively, .Your answer is almost right. When you pick one defective bulb and one non-defective bulb, you need to count the number of ways to pick the non-defective bulb as well. So you can pick 1 bulb of each type in (4C1)(16C1) ways, and the answer is [(4C1)(16C1) + 4C2 ] .
If 10 different balls are to be placed in 4 distinct boxes at random, then the probability that two of these boxes contain exactly 2 and 3 balls is: HARD Quantitative Aptitude > Arithmetic > Counting Principles > Probability Out of 250 bulbs in a box, 35 bulbs are defective. One bulb is taken out at random from the box. Find the probability that the drawn bulb is not defective.Solution for A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. What is the probability that at least.
Question: In a box 20 light bulbs, four are defective. Two light bulbs are selected at random. a) What is the probability that at least one is defective? b) What is the expected number of .Latest IBM Aptitude Question SOLUTION: A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is A. 4/19Two bulbs are chosen at random from this box. The probability that at least one of these is defective is. Please remember that Maximum portability is 1. So we can get total probability of non defective bulbs and subtract it form 1 to get total probability of defective bulbs. 1. What is the probability of getting a sum 9 from two throws of dice.A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective, is - A. $$\frac{4}{19}$$ B. $$\frac{7}{19}$$ C. $$\frac{12}{19}$$ D. $$\frac{21}{95}$$ E. None of these. Answer: Option B
It is known that a box of 200 electric bulbs contains 16 defective bulbs. One bulb is taken out at random from this box. What is the probability that it is a non-defective bulb?A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is: A signal which can be green or red with probability 4 5 and 1 5 respectively, .Your answer is almost right. When you pick one defective bulb and one non-defective bulb, you need to count the number of ways to pick the non-defective bulb as well. So you can pick 1 bulb of each type in (4C1)(16C1) ways, and the answer is [(4C1)(16C1) + 4C2 ] .
electrical bulbs in a box
If 10 different balls are to be placed in 4 distinct boxes at random, then the probability that two of these boxes contain exactly 2 and 3 balls is: HARD Quantitative Aptitude > Arithmetic > Counting Principles > Probability
Out of 250 bulbs in a box, 35 bulbs are defective. One bulb is taken out at random from the box. Find the probability that the drawn bulb is not defective.Solution for A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. What is the probability that at least.Question: In a box 20 light bulbs, four are defective. Two light bulbs are selected at random. a) What is the probability that at least one is defective? b) What is the expected number of .
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a box contains 20 electric bulbs|electrical bulbs in a box