CBSE Class 10 Mathematics Basic 2026: question 1
Set in the CBSE Class 10 board exam of 2026, paper 430/5/1, section A, question 1, for 1 mark. Try it first; the hints and our step-by-step solution are below.
Q1 · 1 mark · MCQReal Numbers
is
- (A)a prime number.
- (B)an odd number.
- (C)a composite number.
- (D)a multiple of 5.
Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 430/5/1.
Hints
Open one hint at a time and try again before the next.
Hint 1
Work out the value of the expression first.
Hint 2
Check whether the result is even.
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 mark
Since 1006 has a factor 2 other than 1 and itself, it is composite (it is even, so not odd; it ends in 6, so not a multiple of 5).
Answer: Composite number, option (C)
Where the marks are
- Shows the number is 1006, which is divisible by 2, hence composite (1 mark)
Revise the chapter
- Chapter: Real Numbers (notes, formulas, where marks are lost and every past question)
- Topic: Fundamental Theorem of Arithmetic
More questions from Real Numbers
- Sample paper 2025-26 (Basic), Q21(A) · 2 marksShow that the number 2 × 5 × 7 × 11 + 11 × 13 is a composite number.
- 2025 board paper, set 430/1/1 (Basic), Q26(b) · 3 marksThe factor tree of a number x is shown below. Find the values of x, y, a and b. Hence, write the product of th…
- 2025 board paper, set 430/2/1 (Basic), Q2 · 1 markThe number 2^n, where n is a natural number, cannot end with the digit :
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.