NCERT Exemplar Solutions
Class 10 - Mathematics - CHAPTER 1: Real Numbers - Exercise 1.2 - Short Answer Questions with Reasoning
Question 2

Question. 2

“The product of two consecutive positive integers is divisible by 2”. Is this statement true or false? Give reasons.

Answer:

True. The product of two consecutive positive integers is always divisible by 2.

Detailed Answer with Explanation:

Step 1: Represent consecutive integers.

Let the first positive integer be \(n\).

Then the next consecutive integer is \(n + 1\).

Step 2: Write their product.

The product is:

\(n(n + 1)\).

Step 3: Reason about even and odd numbers.

Among any two consecutive integers, one is always even and the other is odd.

For example: \(2,3\) or \(5,6\) or \(10,11\).

Step 4: Conclude divisibility.

If one factor is even, the product is always even.

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

Final Answer: The statement is True.

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