Total students in the sample = 40. (i) Number of students preferring Arts Club = 11. Probability(Arts Club) = Number of Arts Club students / Total sample size = 11 / 40 = 0.275 (or 27.5%). (ii) Number of students preferring Sports Club in sample = 9. Probability(Sports Club) = 9 / 40. Total school pRead more
Total students in the sample = 40.
(i) Number of students preferring Arts Club = 11.
Probability(Arts Club) = Number of Arts Club students / Total sample size = 11 / 40 = 0.275 (or 27.5%).
(ii) Number of students preferring Sports Club in sample = 9.
Probability(Sports Club) = 9 / 40.
Total school population = 800.
Estimated students preferring Sports Club = (9 / 40) x 800 = 9 x 20 = 180.
Therefore, approximately 180 students prefer Sports Club.
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
This is a hands-on activity; taking a standard trial of 20 flips: (i) Number of heads obtained = 11. (ii) Number of tails obtained = 20 - 11 = 9. (iii) Experimental probability of heads = Number of heads / Total tosses = 11 / 20 = 0.55 (or 55%). (iv) If tossed once more, past tosses have no influencRead more
This is a hands-on activity; taking a standard trial of 20 flips:
(i) Number of heads obtained = 11.
(ii) Number of tails obtained = 20 – 11 = 9.
(iii) Experimental probability of heads = Number of heads / Total tosses = 11 / 20 = 0.55 (or 55%).
(iv) If tossed once more, past tosses have no influence because coin flips are independent events (avoiding Gambler’s Fallacy). The theoretical probability of tails remains 1 / 2 = 0.5 (or 50%).
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
In an activity of 100 trials, suppose the observed landing frequencies are: Bottom lands = 7 times Top lands = 18 times Side lands = 75 times. Using the formula: Experimental Probability = Number of times the event occurred / Total trials P(bottom) = 7 / 100 = 0.07 (or 7%) P(top) = 18 / 100 = 0.18 (Read more
In an activity of 100 trials, suppose the observed landing frequencies are:
Bottom lands = 7 times
Top lands = 18 times
Side lands = 75 times.
Using the formula:
Experimental Probability = Number of times the event occurred / Total trials
P(bottom) = 7 / 100 = 0.07 (or 7%)
P(top) = 18 / 100 = 0.18 (or 18%)
P(side) = 75 / 100 = 0.75 (or 75%).
The sum of all experimental probabilities is 0.07 + 0.18 + 0.75 = 1.
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
Yes, Grandpa was aware or at least strongly suspected, that Ravi was following him. His detective-story gift contained advice about how to avoid being fooled while trailing a suspect. Ravi also noticed a mischievous twinkle in Grandpa’s eye. These details suggest that Grandpa knew Ravi had followedRead more
Yes, Grandpa was aware or at least strongly suspected, that Ravi was following him. His detective-story gift contained advice about how to avoid being fooled while trailing a suspect. Ravi also noticed a mischievous twinkle in Grandpa’s eye. These details suggest that Grandpa knew Ravi had followed him and deliberately gave him the book as a playful reminder of his unsuccessful detective work.
For more NCERT Solutions of Class 9 English Kaveri Chapter 4 Vitamin-M Question Answer (2026-27)
Ravi can be considered a good detective because he followed Grandpa secretly, maintained a safe distance, observed his movements and tried to discover where he was going. However, he was not a completely successful detective because Grandpa managed to confuse him. Ravi followed a stranger on the busRead more
Ravi can be considered a good detective because he followed Grandpa secretly, maintained a safe distance, observed his movements and tried to discover where he was going. However, he was not a completely successful detective because Grandpa managed to confuse him. Ravi followed a stranger on the bus merely because he wore Grandpa’s yellow cap and similar clothes and thus realised he had been fooled.
For more NCERT Solutions of Class 9 English Kaveri Chapter 4 Vitamin-M Question Answer (2026-27)
A survey is conducted at a school where a random sample of 40 students is asked about their favourite club. The responses are: 14 students: Science Club | 11 students: Arts Club | 9 students: Sports Club | 6 students: Debate Club. Assume there are 800 students in the whole school. (i) What is the probability that a randomly chosen student from the sample prefers the Arts Club? (ii) Using the sample results, estimate how many students in the whole school are likely to prefer the Sports Club.
Total students in the sample = 40. (i) Number of students preferring Arts Club = 11. Probability(Arts Club) = Number of Arts Club students / Total sample size = 11 / 40 = 0.275 (or 27.5%). (ii) Number of students preferring Sports Club in sample = 9. Probability(Sports Club) = 9 / 40. Total school pRead more
Total students in the sample = 40.
(i) Number of students preferring Arts Club = 11.
Probability(Arts Club) = Number of Arts Club students / Total sample size = 11 / 40 = 0.275 (or 27.5%).
(ii) Number of students preferring Sports Club in sample = 9.
Probability(Sports Club) = 9 / 40.
Total school population = 800.
Estimated students preferring Sports Club = (9 / 40) x 800 = 9 x 20 = 180.
Therefore, approximately 180 students prefer Sports Club.
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-7/
See lessToss a coin 20 times and record the result each time (heads or tails). (i) How many times did you get heads? (ii) How many times did you get tails? (iii) Calculate the experimental probability of getting heads. (iv) If you toss the coin once more, what is the probability of getting tails?
This is a hands-on activity; taking a standard trial of 20 flips: (i) Number of heads obtained = 11. (ii) Number of tails obtained = 20 - 11 = 9. (iii) Experimental probability of heads = Number of heads / Total tosses = 11 / 20 = 0.55 (or 55%). (iv) If tossed once more, past tosses have no influencRead more
This is a hands-on activity; taking a standard trial of 20 flips:
(i) Number of heads obtained = 11.
(ii) Number of tails obtained = 20 – 11 = 9.
(iii) Experimental probability of heads = Number of heads / Total tosses = 11 / 20 = 0.55 (or 55%).
(iv) If tossed once more, past tosses have no influence because coin flips are independent events (avoiding Gambler’s Fallacy). The theoretical probability of tails remains 1 / 2 = 0.5 (or 50%).
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-7/
See lessToss a paper cup into the air 100 times. After each toss record whether the cup lands on its bottom, upside down on its top or on its side (See Fig. 7.5). Assign probabilities to the outcomes by using experimental probability.
In an activity of 100 trials, suppose the observed landing frequencies are: Bottom lands = 7 times Top lands = 18 times Side lands = 75 times. Using the formula: Experimental Probability = Number of times the event occurred / Total trials P(bottom) = 7 / 100 = 0.07 (or 7%) P(top) = 18 / 100 = 0.18 (Read more
In an activity of 100 trials, suppose the observed landing frequencies are:
Bottom lands = 7 times
Top lands = 18 times
Side lands = 75 times.
Using the formula:
Experimental Probability = Number of times the event occurred / Total trials
P(bottom) = 7 / 100 = 0.07 (or 7%)
P(top) = 18 / 100 = 0.18 (or 18%)
P(side) = 75 / 100 = 0.75 (or 75%).
The sum of all experimental probabilities is 0.07 + 0.18 + 0.75 = 1.
For more NCERT Solutions of Class 9 Ganita Manjari Chapter 7 The Mathematics of Maybe: Introduction to Probability Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-7/
See lessWas Grandfather aware that Ravi was following him? How do you know?
Yes, Grandpa was aware or at least strongly suspected, that Ravi was following him. His detective-story gift contained advice about how to avoid being fooled while trailing a suspect. Ravi also noticed a mischievous twinkle in Grandpa’s eye. These details suggest that Grandpa knew Ravi had followedRead more
Yes, Grandpa was aware or at least strongly suspected, that Ravi was following him. His detective-story gift contained advice about how to avoid being fooled while trailing a suspect. Ravi also noticed a mischievous twinkle in Grandpa’s eye. These details suggest that Grandpa knew Ravi had followed him and deliberately gave him the book as a playful reminder of his unsuccessful detective work.
For more NCERT Solutions of Class 9 English Kaveri Chapter 4 Vitamin-M Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/english/kaveri-chapter-4/
See less‘Ravi is a good detective’. Give one argument in favour of and against the given statement.
Ravi can be considered a good detective because he followed Grandpa secretly, maintained a safe distance, observed his movements and tried to discover where he was going. However, he was not a completely successful detective because Grandpa managed to confuse him. Ravi followed a stranger on the busRead more
Ravi can be considered a good detective because he followed Grandpa secretly, maintained a safe distance, observed his movements and tried to discover where he was going. However, he was not a completely successful detective because Grandpa managed to confuse him. Ravi followed a stranger on the bus merely because he wore Grandpa’s yellow cap and similar clothes and thus realised he had been fooled.
For more NCERT Solutions of Class 9 English Kaveri Chapter 4 Vitamin-M Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/english/kaveri-chapter-4/
See less