NCERT Class 10
Two customers Shyam and Ekta are visiting a particular shop in the same week (Tuesday to Saturday). Each is equally likely to visit the shop on any day as on another day. What is the probability that both will visit the shop on (i) the same day? (ii) consecutive days? (iii) different days?
06
Oct
Two customers Shyam and Ekta are visiting a particular shop in the same week (Tuesday to Saturday). Each is equally likely to visit the shop on any day as on another day. What is the probability that both will visit the shop on (i) the same day? (ii) consecutive days? (iii) different days? A die [...]
Which of the following arguments are correct and which are not correct? Give reasons for your answer. (i) If two coins are tossed simultaneously there are three possible outcomes-two heads, two tails or one of each. Therefore, for each of these outcomes, the probability is 3/1 (ii) If a die is thrown, there are two possible outcomes-an odd number or an even number. Therefore, the probability of getting an odd number is 2/1.
06
Oct
Which of the following arguments are correct and which are not correct? Give reasons for your answer. (i) If two coins are tossed simultaneously there are three possible outcomes-two heads, two tails or one of each. Therefore, for each of these outcomes, the probability is 3/1 (ii) If a die is thrown, there are two [...]
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for each of these outcomes ,
the probability is 3/1 (ii) If a die is thrown ,
the probability of getting an odd number is 2/1. ,
there are two possible outcomes-an odd number or an even number. Therefore ,
two tails or one of each. Therefore ,
Which of the following arguments are correct and which are not correct? Give reasons for your answer. (i) If two coins are tossed simultaneously there are three possible outcomes-two heads ,
A die is thrown twice. What is the probability that (i) 5 will not come up either time? (ii) 5 will come up at least once?
06
Oct
A die is thrown twice. What is the probability that (i) 5 will not come up either time? (ii) 5 will come up at least once? A die is thrown twice. What is the probability that (i) 5 will not come up either time? (ii) 5 will come up at least once? October 6, 2020 [...]
A game consists of tossing a one rupee coin 3 times and noting its outcome each time. Hanif wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that Hanif will lose the game.
06
Oct
A game consists of tossing a one rupee coin 3 times and noting its outcome each time. Hanif wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that Hanif will lose the game. A game consists of tossing a one rupee coin 3 [...]
Refer to Example 13. (i) Complete the following table: (ii) A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument? Justify your answer.
06
Oct
Refer to Example 13. (i) Complete the following table: (ii) A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument? Justify your answer. 10 11 and 12. Therefore 3% 4 [...]
A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that (i) She will buy it (ii) She will not buy it.
06
Oct
A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that (i) She will buy it (ii) She will not buy it. A die is thrown [...]
Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with diameter 1 m?
06
Oct
Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with diameter 1 m? Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with [...]
A child has a die whose six faces show the letters as given below : A B C D E A The die is thrown once. What is the probability of getting i) A ? ii) D ?
06
Oct
A child has a die whose six faces show the letters as given below : A B C D E A The die is thrown once. What is the probability of getting i) A ? ii) D ? A child has a die whose six faces show the letters as given below : A B [...]
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfect square number (iii) a number divisible by 5.
06
Oct
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfect square number (iii) a number divisible by 5. A box contains 90 discs which are numbered from 1 to [...]
A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in the previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the probability that this bulb is not defective?
06
Oct
A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in the previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the [...]