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Recent questions tagged q8-b

A team of medical students doing their internship have to assist during surgeries at a city hospital.The probabilities of surgeries rated as very complex,complex,routine,simple or very simple are respectively 0.15,0.20,0.31,0.26,0.08.Find the probabilities that a particular surgery will be rated neither very complex nor very simple

asked Jul 7, 2014 by sreemathi.v

1 answer

Find the volume of the parallelopiped whose three co-terminus edges are represented by the vectors $\hat{i}+\hat{j}+\hat{k},\hat{i}-\hat{j}+\hat{k}$ and $\hat{i}+2\hat{j}-\hat{k}$

asked Apr 22, 2013 by sreemathi.v

0 answers

Find the unit vector perpendicular to the two vectors $\overrightarrow{i}+2\overrightarrow{j}-\overrightarrow{k}$ and $2\overrightarrow{i}+3\overrightarrow{j}+\overrightarrow{k}$.

asked Apr 19, 2013 by sreemathi.v

0 answers

A candidate is selected for interview of management trainees for 3 companies.For the first company,there are 12 candidates,for the second there are 15 candidates and for the third,there are 10 candidates.Find the probability that he is selected in at least one of the companies.

asked Apr 17, 2013 by sreemathi.v

1 answer

A card is drawn at random from a pack of 52 playing cards.What is the probability that the card drawn is neither a spade nor a queen?

asked Apr 16, 2013 by sreemathi.v

0 answers

Assuming that on an average one telephone out of 10 is busy,seven telephone numbers are randomly selected and called.Find the probability that three of them will be busy.

asked Apr 16, 2013 by sreemathi.v

1 answer

The probability that a teacher will give an unannounced test during any class meeting is $\large\frac{1}{5}$.If a student is absent twice,find the probability that the student will miss at least one test.

asked Apr 15, 2013 by sreemathi.v

0 answers

An article manufactured by a company consists of two parts A and B .In the process of manufacture of part A,9 out of 104 parts may be defective.Similarly,5 out of 100 are likely to be defective in the manufacture of part B.Calculate the probability that the article manufactured will not be defective.

asked Apr 12, 2013 by sreemathi.v

0 answers

There are two bags.One bag contains six green and three red balls.The second bag contains five green and four red balls.One ball is transferred from the first bag to the second bag.Then one ball is drawn from the second bag.Find the probability that it is a red ball.

asked Apr 12, 2013 by sreemathi.v

0 answers

Aman and Bhavan throw a pair of dice alternately.In order to win,they have to get a sum of 8.Find their respective probabilities of winning if Aman starts the game.

asked Apr 11, 2013 by sreemathi.v

0 answers

A box contains 30 bolts and 40 nuts .Half of the bolts and half of the nuts are rusted.If two items are drawn at random from the box,what is the probability that either both are rusted or both are bolts?

asked Apr 10, 2013 by sreemathi.v

0 answers

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