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NCERT Class 11 Mathematics Solutions: Chapter 16 – Probability Exercise 16.3 Part 1

Illustration: NCERT Class 11 Mathematics Solutions: Chapter 16 – Probability Exercise 16.3 Part 1

1. Which of the following can not be valid assignment of probabilities for outcomes of sample space.

Probability of Posible outcomesIn Table Probability of Posible Outcomes Are Given
Assignment

Answer: (a)

Probability of First eventTable for First Event is Shown

Here, each of the numbers is positive and less than .

Sum of probabilities

So, the assignment is valid.

Answer: (b)

Probability for Second eventIn Figure Probability for Second Event is Shown

Here, each of the numbers is positive and less than 1.

Sum of probabilities

So, the assignment is valid.

Answer: (c)

Probability of Third eventTable for Third Outcome is Shown

Here, each of the numbers is positive and less than

Sum of Probabilities

So, the assignment is not valid.

Answer: (d)

Probability for Fourth Event in Figure Probability for Fourth Event is Shown

Here, are negative.

So, the assignment is not valid.

Answer: (e)

Probability of Fifth eventIn Figure Probability of Fifth Event is Shown

Here,

So, the assignment is not valid.