NCERT Exemplar Solutions
Class 10 - Mathematics - CHAPTER 1: Real Numbers - Exercise 1.2 - Short Answer Questions with Reasoning
Question 3

Question. 3

“The product of three consecutive positive integers is divisible by 6”. Is this statement true or false? Justify your answer.

Answer:

The statement is True. The product of three consecutive positive integers is always divisible by 6.

Detailed Answer with Explanation:

Step 1: Write the three consecutive integers.

Let the integers be \(n, n+1, n+2\).

Step 2: Check divisibility by 2 (even number).

Any three consecutive numbers must include at least one even number,

because every second number is even.

So, \(n(n+1)(n+2)\) is divisible by 2.

Step 3: Check divisibility by 3.

Every third number is divisible by 3, so among \(n, n+1, n+2\),

at least one will be a multiple of 3.

So, \(n(n+1)(n+2)\) is divisible by 3.

Step 4: Combine the results.

If a number is divisible by both 2 and 3, it is divisible by 6.

Hence, the product \(n(n+1)(n+2)\) is always divisible by 6.

Conclusion: The statement is True.

NCERT Exemplar Solutions Class 10 – Mathematics – CHAPTER 1: Real Numbers – Exercise 1.2 - Short Answer Questions with Reasoning | Detailed Answers