In a class, 30% of the students offer...

In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi? `2/5` (b) `3/5` (c) `3/4` (d) `3/(10)` (e) None of these

Text Solution

AI Generated Solution

Topper's Solved these Questions

PIPES AND CISTERNS
RS AGGARWAL|Exercise All Questions|69 Videos
PROBLEMS ON AGES
RS AGGARWAL|Exercise All Questions|59 Videos

Similar Questions

Explore conceptually related problems

In a class, 30% of the students offered mathematics, 20% offered chemistry and 10% offered both. If a student is selected at random, find the probability that he has offered mathematics or chemistry.

In a class 40% of the students offered Physics 20% offered Chemistry and 5% offered both. If a student is selected at random, find the probability that he has offered Physics or Chemistry only.

In a hostel 60 % of students read Hindi newspapers , 40 % read English and 20 % both . A student is selected at random . Find the probability that she reads neither Hindi nor English newspaper .

In a class 45% students read English, 30% read French and 20% read both English and French. One student is selected at random. Find the probability that he reads English, if it is known that he reads French.

In a class 45% students read English, 30% read French and 20% read both English and French. One student is selected at random find the probability that he reads French, if it is known that he reads English.

In a class 30% students like tea, 20% like coffee and 10% like both tea and coffee. A student is selected at random then what is the probability that he does not like tea if it is known that he likes coffee?

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

RS AGGARWAL-PROBABILITY-All Questions

A basket contains 4 red, 5 blue and 3 green marbles. If three marbl...
Text Solution
|
An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If 4 m...
Text Solution
|
A basket contains 6 blue, 2 red, 4 green and 3 yellow balls. If 5 b...
Text Solution
|
An urn contains 2 red, 3 green and 2 blue balls. If 2 balls are dra...
Text Solution
|
A box contains 10 black and 10 white balls. What is the probability...
Text Solution
|
A box contains 20 electric bulbs, out of which 4 are defective. Two...
Text Solution
|
In a class,there are 15 boys and 10 girls.Three students are selected ...
Text Solution
|
Four persons are selected at random out of 3 men, 2 women and 4 chi...
Text Solution
|
Two dice are tossed. The probability that the total score is a prim...
Text Solution
|
In a class, 30% of the students offered English, 20% offered Hindi ...
Text Solution
|
A husband and wife appear in an interview for two vacancies in the sam...
Text Solution
|
A speaks truth in 75% cases and B in 80% of the cases. In what perc...
Text Solution
|
A speaks truth in 60% cases and B speaks truth in 70% cases. The proba...
Text Solution
|
A committee of 3 members is to be selected out of 3 men and 2 women...
Text Solution
|
A bag contains 3 blue, 2 green and 5 red balls. If four balls are p...
Text Solution
|
Dev can hit a target 3 times in 6 shorts Pawan can hit the target 2...
Text Solution
|
A bag contains 10 mangoes out of which 4 are rotten. Two mangoes are...
Text Solution
|
A bag contains 4 red, 5 yellow and 6 pink balls. Two balls are draw...
Text Solution
|
A bag contains 6 red balls 11 yellow balls and 5 pink balls. If two...
Text Solution
|
A bag contains 4 red balls, 6 blue balls and 8 pink balls. One ball...
Text Solution
|