CBSE Class 10 Mathematics Standard 2023: question 3
Set in the CBSE Class 10 board exam of 2023, paper 30/4/1, section A, question 3, for 1 mark. Try it first; the hints and our step-by-step solution are below.
Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 30/4/1.
Hints
Open one hint at a time and try again before the next.
Hint 1
Write each term as a multiple of .
Hint 2
The terms are . Find the fourth and write it as a single square root.
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.
Simplify each term: , , .
The common difference is , so the next term is .
- 1 mark
. So the answer is option (B).
Answer: , option (B)
Where the marks are
- Chooses option (B) (1 mark)
Revise the chapter
- Chapter: Arithmetic Progressions (notes, formulas, where marks are lost and every past question)
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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.