Class 9 Mathematics Part 1 (Algebra) – Daily Revision MCQ (English Medium)
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If n(A) = 18, n(B) = 14 and n(A ∩ B) = 6, what is n(A ∪ B)?
Chapter 1: Sets
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Answer: B. 26
n(A ∪ B) = n(A) + n(B) − n(A ∩ B) = 18 + 14 − 6 = 26.If U = {1, 2, 3, 4, 5, 6} and A = {2, 4, 6}, then the complement A′ is:
Chapter 1: Sets
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Answer: C. {1, 3, 5}
A′ has the elements of U that are not in A: 1, 3 and 5.In the surd ∛7 (cube root of 7), what is the order of the surd?
Chapter 2: Real Numbers
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Answer: A. 3
In ⁿ√a, n is the order of the surd; for ∛7, n = 3 and 7 is the radicand.What is the simplest form of √75?
Chapter 2: Real Numbers
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Answer: D. 5√3
√75 = √(25 × 3) = √25 × √3 = 5√3.What is the degree of the polynomial 5x³ − 2x⁶ + 7?
Chapter 3: Polynomials
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Answer: C. 6
The degree is the highest power of the variable in the polynomial; here it is 6 (from −2x⁶).By the remainder theorem, what is the remainder when p(x) = 2x² − 3x + 4 is divided by (x + 1)?
Chapter 3: Polynomials
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Answer: A. 9
Remainder = p(−1) = 2(1) − 3(−1) + 4 = 2 + 3 + 4 = 9.What is the mean proportional (geometric mean) of 9 and 16?
Chapter 4: Ratio and Proportion
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Answer: D. 12
If b is the mean proportional of a and c, then b² = ac = 9 × 16 = 144, so b = 12.Solve the simultaneous equations x + y = 11 and x − y = 3. What is the value of y?
Chapter 5: Linear Equations in Two Variables
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Answer: B. 4
Adding the equations: 2x = 14, so x = 7; then y = 11 − 7 = 4.The PAN (Permanent Account Number) given by the Income Tax Department is a unique alphanumeric number of how many characters?
Chapter 6: Financial Planning
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Answer: C. 10
Every tax-payer gets a unique ten-character alphanumeric PAN, which must be written on tax challans and returns.What is the median of the scores 7, 3, 9, 5, 11, 4?
Chapter 7: Statistics
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Answer: A. 6
In order: 3, 4, 5, 7, 9, 11. There are 6 scores, so the median is the average of the middle two: (5 + 7) ÷ 2 = 6.
Class 9: MCQ in other subjects
All questions are written by PadhaiNotes in our own words from the chapters of the official Maharashtra State Board Balbharati textbook (ebalbharati.in). Each question shows its chapter.