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(3 × 11 × 13 + 3) is : (Class 10 Maths 2026, Q4)

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MathsCBSE Class 10 · Standard · Board exam 2026, set 30/3/1 · 1 mark · MCQ

CBSE Class 10 Mathematics Standard 2026: question 4

Set in the CBSE Class 10 board exam of 2026, paper 30/3/1, section A, question 4, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q4 · 1 mark · MCQReal Numbers

is :

  1. (A)a prime number
  2. (B)divisible by 13
  3. (C)a composite number
  4. (D)an odd number

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 30/3/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Look for a common factor in both terms.

Hint 2

Take 3 common and simplify what remains inside the bracket.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Take 3 common: .

  2. 432 has factors other than 1 and itself (for example 3), so it is composite. It is even, and is not a whole number. The answer is option (C).

    1 mark

Answer: A composite number; option (C)

Where the marks are

  • Chooses option (C) a composite number (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Real Numbers, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 30/3/1 (Standard): every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.