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A die is thrown once… (Class 10 Maths 2026, Q18)

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

CBSE Class 10 Mathematics Standard 2026: question 18

Set in the CBSE Class 10 board exam of 2026, paper 30/1/1, section A, question 18, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q18 · 1 mark · MCQProbability

A die is thrown once. Probability of getting a number other than 3 is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)1

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

Hints

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

Hint 1

List all the faces of a die and remove the 3.

Hint 2

Alternatively, use .

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. Total outcomes = 6. Outcomes other than 3 are 1, 2, 4, 5, 6, which is 5 outcomes.

    ½ mark

  2. (equivalently ). Hence option (C).

    ½ mark

Answer: , option (C)

Where the marks are

  • Counts 5 favourable out of 6 outcomes, giving , option (C) (1 mark)

Revise the chapter

  • Chapter: Probability (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Probability, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 30/1/1 (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.