Q. 173.7( 3 Votes )

A die is thrown 100 times and following observations were recorded:


If a die is thrown at random, find the probability of getting

(i) a number less than 3? (ii) a number greater than 4 (iii) an even number

Answer :

Total number of outcomes : 100


(i) Chances of getting a number less than 3 on the die = 2 (They are 1,2)


Its frequency is: 12+18 = 30


Probability P() =


Probability of getting a number less than 3 on die P(less than 3)


=


(ii) Chances of getting a even number on the die = 3 (They are 2,4,6)


Frequency : 18+26+16 = 60


Probability P() =


Probability of getting a composite number on die the P(even number)



(iii) Chances of getting a number greater than 4 on the die = 2 (They are 5,6)


Frequence : 14+16 = 30


Probability P() =


Probability of getting a number not less than 4 on die P(greater than 4)



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