NCERT Exemplar Solutions
Class 10 - Mathematics - CHAPTER 13: Statistics and Probability - Exercise 13.2
Question 7

Question. 7

Apoorv throws two dice once and computes the product of the numbers appearing on the dice. Peehu throws one die and squares the number that appears on it. Who has the better chance of getting the number 36? Why?

Answer:

Apoorv

Detailed Answer with Explanation:

Step 1: Understand Peehu's case

Peehu throws only one die. A die has six faces: 1, 2, 3, 4, 5, 6.

She squares the number that comes. To get 36, she must have:

\(6^2 = 36\).

So Peehu gets 36 only when she rolls a 6.

Probability = \(\dfrac{1}{6}\), because only 1 favorable outcome (rolling a 6) out of 6 total outcomes.


Step 2: Understand Apoorv's case

Apoorv throws two dice together. Each die has 6 faces, so total outcomes = \(6 \times 6 = 36\).

He multiplies the two numbers. We want the product to be 36.

Let’s check possible pairs:

  • (6, 6): product = 36 ✔️
  • (3, 12): not possible because dice go only up to 6 ❌
  • (4, 9): not possible because dice go only up to 6 ❌

So only one favorable outcome exists: (6, 6).

Probability = \(\dfrac{1}{36}\).


Step 3: Compare probabilities

Peehu: \(\dfrac{1}{6}\)

Apoorv: \(\dfrac{1}{36}\)

Since \(\dfrac{1}{6} > \dfrac{1}{36}\), Peehu has a higher chance.


Final Answer: Peehu has the better chance of getting 36.

NCERT Exemplar Solutions Class 10 – Mathematics – CHAPTER 13: Statistics and Probability – Exercise 13.2 | Detailed Answers