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S seema garhwal
Two events A and B will be independent, if Or   Option B is correct.

S seema garhwal
when a pair of dice is rolled, total outcomes  Even prime number   The probability of obtaining an even prime number on each die                                                                                           Option D is correct.

S seema garhwal
H :   of the students read Hindi newspaper, E :  read English newspaper       and       read both Hindi and English newspapers.  the probability that she reads Hindi newspaper if she reads English newspaper                                                                                                                                                                                           ...

S seema garhwal
H :   of the students read Hindi newspaper, E :  read English newspaper       and       read both Hindi and English newspapers. The probability that she reads English newspape if she reads Hindi newspaper                                                                                                                                                                                             ...

S seema garhwal
H :   of the students read Hindi newspaper, E :  read English newspaper       and       read both Hindi and English newspapers. the probability that she reads neither Hindi nor English newspapers                                                                                                                                                                                                      ...

S seema garhwal
One card is drawn at random from a well shuffled deck of  cards Total king or queen = 8 total queen or jack = 8 E : ‘the card drawn is a king or queen’ F : ‘the card drawn is a queen or jack’.  a card which is queen  = 4 Hence, E and F are not indepentdent  events .

S seema garhwal
One card is drawn at random from a well shuffled deck of  cards Total black card = 26 total king =4 E : ‘the card drawn is black’  F : ‘the card drawn is a king’  a card which is black and king = 2 Hence, E and F are indepentdent events .

S seema garhwal
One card is drawn at random from a well shuffled deck of  cards Total ace = 4 total spades =13 E : ‘the card drawn is a spade  F : ‘the card drawn is an ace’  a card which is spade and ace = 1 Hence, E and F are indepentdent events .

S seema garhwal
and        ,         ,              probability that exactly one of them solves the problem      probability that exactly one of them solves the problem                                                                                                                                                                                                                                    ...

S seema garhwal
and         Since, problem is solved independently by A and B,                                                 probability that the problem is solved

S seema garhwal
Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Total balls =18 Black balls = 10 Red balls = 8 Let the first ball is black and the second ball is red. The probability of getting a black ball in the first draw                                                                               The ball is replaced after drawing the first ball. The...

S seema garhwal
Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Total balls =18 Black balls = 10 Red balls = 8 The probability of getting a black ball in the first draw                                                                               The ball is replaced after drawing the first ball. The probability of getting a red ball in the second draw           ...

S seema garhwal
Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Total balls =18 Black balls = 10 Red balls = 8 The probability of getting a red ball in first draw                                                                               The ball is repleced after drawing first ball. The probability of getting a red ball in second draw                         ...

S seema garhwal
A die is tossed thrice. Outcomes  Odd numbers  The probability of getting an odd number at first throw                                                                                          The probability of getting an even number                                                                             Probability of getting even number three times                                         ...

S seema garhwal

S seema garhwal

S seema garhwal
Given two independent events and .

S seema garhwal
Given two independent events and .         Also , we know