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For any natural number n, 6^n… (Class 10 Maths 2026, Q3)

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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 3

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

Q3 · 1 mark · MCQReal Numbers

For any natural number , ends with the digit :

  1. (A)0
  2. (B)6
  3. (C)3
  4. (D)2

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

Work out the first few powers of 6.

Hint 2

Look only at the units digit each time.

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. , , , and so on.

  2. A number ending in 6 multiplied by 6 again ends in 6, because . So always ends in 6. Option (b).

    1 mark

Answer: 6, option (b)

Where the marks are

  • Selects 6, option (b) (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 30/1/1 (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.