Rs Aggarwal 2017 Solutions for Class 7 Math Chapter 23 Probability are provided here with simple step-by-step explanations. These solutions for Probability are extremely popular among Class 7 students for Math Probability Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Rs Aggarwal 2017 Book of Class 7 Math Chapter 23 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Rs Aggarwal 2017 Solutions. All Rs Aggarwal 2017 Solutions for class Class 7 Math are prepared by experts and are 100% accurate.

Page No 281:

Answer:

Total number of trials = 300
Number of times a head is obtained = 136
Number of times a tail is obtained= 164

(i) Probability of getting head =Number of times heads is obtainedTotal number of trials=136300=3475

(ii) Probability of getting a tail =Number of times tails is obtainedTotal number of trials=164300=4175

Page No 281:

Answer:

Total number of trials = 200
Number of times 2 heads are obtained = 58
Number of times one head is obtained  = 83
Number of times no head is obtained = 59

(i) Probability of getting 2 heads =  Number of times 2 heads have been obtainedTotal number of trials  = 58200=29100


(ii) Probability of getting 1 head = Number of times 1 head has been obtainedTotal number of trials  = 83200


(iii) Probability of getting 0 head =  Number of times head has not been obtainedTotal number of trials  = 59200

Page No 281:

Answer:

Total number of trials = 100
Number of times 3 is obtained = 18
Number of times 6 is obtained = 9
Number of times 4 is obtained = 15
Number of times 1 is obtained =  21

(i) Probability of getting a 3=Number of times 3 is obtainedTotal number of trials =18100=950(ii) Probability of getting a 6=Number of times 6 is obtainedTotal number of trials =9100(iii) Probability of getting a 4=Number of times 4 is obtainedTotal number of trials =15100=320(iv) Probability of getting a 1=Number of times 1 is obtainedTotal number of trials =21100

Page No 281:

Answer:

Total number of ladies surveyed = 100
Ladies who like coffee = 36
Ladies who do not like coffee = 64

(i) Probability of choosing a lady who likes coffee=Number of ladies who like coffeeTotal number of ladies =36100=925(ii) Probability of choosing a lady who dislikes coffee=Number of ladies who dislike coffeeTotal number of ladies =64100=1625



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