## VBQ for Class 9 Probability Chapter 15 Probability

Class 9 Probability students should refer to the following value based questions with answers for Chapter 15 Probability in standard 9. These VBQ questions with answers for Grade 9 Probability will come in exams and help you to score good marks

### Chapter 15 Probability VBQ Questions Class 9 Probability with Answers

**Question. 1500 families with 2 children were selected randomly, and the following data were recorded—**

**No. of girls in a family 2 1 0**

**No. of families 800 500 200**

**(a) Compute the probability of a family having 2 girls.**

**(b) What value is promoted by this data ?**

**Answer:** (a) 800/1500 = 8/15

(b) Promotion to girl child

**Question. On the occassion of Independence Day celebration out of 1200 students, 900 students took part in this celebration.**

**(a) Evaluate the probability that the students participated in the celebration.**

**(b) What values are represented through this activity ?**

**Answer:** (a) 900/1200 = 3/4

(b) Love for Nation

**Question. Sita says that in word MADAM, the probability of letter M is equal to that letter A. Is she right? What value represents in it ?**

**Answer:** (a) P(M) = P(A) = 2/ 5

(b) Truth value

**Question. In 1000 families 750 families have 1 child and rest of families have two children. Find the probability of having (a) 1 child and (b) two children What value represents from this ?**

**Answer: **(a) 750 / 1000 or 3/4

(b) 250 /1000 or 1/4

(c) (i) Population control

(ii) Small family is a happy family

**Question. In a colony, 920 out of 1000 people visited Radha Krishan Temple on the occassion of Janamashtmi. Find the probability of people not visited the temple. What value represents in this ?**

**Answer:** (a) 80/1000 or 2/25

(b) Spiritual value

**Question. In a school, 100 students took part in Van Mahotsava and helped each other in planting the tree.**

**Name of plants Rose Mari gold Chameli Jasmine**

**No. of plants 32 28 16 24**

**Find the probability of planting**

**(a) Rose (b) Jasmine**

**What value represents here ?**

**Answer:** (a) 32/100 or 8/25

(b) 24/100 or 6/25

(c) (i) Environmental protection

(ii) Co-operation

**Question. Mohan earns Rs. 30,000 in a month. He spends Rs. 25,000 on his needs. What is the probability of his saving ? What value is depicted from it ?**

**Answer: **(a) 5000/30000 or 1/6

(b) Habit of saving

**Question. In a town out of 1000 persons, 998 are literate. Calculate the probability that a selected person is**

**(a) Literate (b) Illiterate**

**What value do this data represent ?**

**Answer:** (a) 998/1000 or 499/500

(b) 2/1000 or 1/500

(c) Literacy rate is high in cities.

**Question. The blood groups of 15 students of class IX are recorded as follows— A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, AB**

**Find the probability of blood group—**

**(a) O**

**(b) A**

**(c) What value do you draw from this activity ?**

**Answer:** (a) 7/15

(b) 4/15

(c) (i) Habit of donation

(ii) Social work

**Question. On Lajpat Nagar crossing, out of 100 people, 9 people jumped traffic light. Find the probability of people not jumping traffic light. What value is depicted from this ?**

**Answer:** (a) 91/100

(b) Society becomes aware to avoid accidents and save precious life.

**Please refer to attached file for CBSE Class 9 VBQs Probability**

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