
Blessy has two bags containing numbered counters.
She takes one counter at random from bag A and another counter at random from Bag B. She adds the numbers on her two counters. Find the probability that Blessy’s answer is more than 6.

Answer
492k+ views
Hint: n this question, we need to determine the probability that Blessy’s answer was more than 6 when she had drawn 2 balls at random from the bags A and B. For this, we will use the basic formula of probability which is given as .
Complete step-by-step answer:
A total number of events of drawing counters from bag A and bag B having 5 counters and 4 counters respectively is the product of the total counters in the bags.
Let the total number of events be .
So, the total number of events is given as:
Now, a favourable number of events are the events satisfying the given condition in the question. Here, the condition is that the total sum of the counters should be more than 6.
So, the favourable number of outcomes is given as:
Now, the ratio of the favourable number of outcomes to the total number of outcomes results in the probability of satisfying the favourable outcomes. Mathematically . Here, a favourable number of outcomes is 8, and the total number of outcomes is 20.
So, substitute in the formula to determine the probability that Blessy’s have more than 6 as the sum of the counters.
Hence, the probability that Bleesy has the sum of the counters in her hand is 0.4.
Note: Students must be careful while estimating the total number of favourable outcomes as if even one favourable outcome has not been counted then, it will lead to the wrong answer.
Complete step-by-step answer:
A total number of events of drawing counters from bag A and bag B having 5 counters and 4 counters respectively is the product of the total counters in the bags.
Let the total number of events be
So, the total number of events is given as:
Now, a favourable number of events are the events satisfying the given condition in the question. Here, the condition is that the total sum of the counters should be more than 6.
So, the favourable number of outcomes is given as:
Now, the ratio of the favourable number of outcomes to the total number of outcomes results in the probability of satisfying the favourable outcomes. Mathematically
So, substitute
Hence, the probability that Bleesy has the sum of the counters in her hand is 0.4.
Note: Students must be careful while estimating the total number of favourable outcomes as if even one favourable outcome has not been counted then, it will lead to the wrong answer.
Recently Updated Pages
Express the following as a fraction and simplify a class 7 maths CBSE

The length and width of a rectangle are in ratio of class 7 maths CBSE

The ratio of the income to the expenditure of a family class 7 maths CBSE

How do you write 025 million in scientific notatio class 7 maths CBSE

How do you convert 295 meters per second to kilometers class 7 maths CBSE

Write the following in Roman numerals 25819 class 7 maths CBSE

Trending doubts
Give 10 examples of unisexual and bisexual flowers

Draw a labelled sketch of the human eye class 12 physics CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Differentiate between insitu conservation and exsitu class 12 biology CBSE

What are the major means of transport Explain each class 12 social science CBSE

Franz thinks Will they make them sing in German even class 12 english CBSE
