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MATHS Assertion (A) & Reason (B) MCQ

Algebraic Expressions and Identities · Gujarat Board (GSEB) STD 8 (GSEB - English Medium). 3 questions.

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Assertion (A) & Reason (B) MCQ

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3 questions · timed · auto-graded

MCQ 11 Mark
Assertion (A) 5 terms are there in the expression $5 x y+9 y z+3 z x+5 x-4 y$.
Reason (R) An algebraic expression consists of a group of terms separated by operators, which are either plus signs or minus signs?
  • A
    Both A and R are correct and R is the correct explanation of A.
  • B
    Both A and R are correct but R is not the correct explanation of A.
  • C
    A is false but R is true.
  • ✓
    A is true but R is false.
Answer
Correct option: D.
A is true but R is false.
D
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MCQ 21 Mark
Assertion (A) The algebraic expression $2 x^2+5 x-3$ is a binomial.
Reason (R) An algebraic expression, which contains three terms separated by addition (+) or subtraction (-) operators, is called a trinomial.
  • A
    Both A and R are correct and R is the correct explanation of A.
  • B
    Both A and R are correct but R is not the correct explanation of A.
  • ✓
    A is false but R is true.
  • D
    A is true but R is false.
Answer
Correct option: C.
A is false but R is true.
C
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MCQ 31 Mark
Assertion (A) The algebraic expression $(x+3)(x-3)$ can be simplified as $x^2-9$.
Reason (R) The expression $(a+b)(a-b)$ can always be simplified as $a^2-b^2$.
  • ✓
    Both A and R are correct and R is the correct explanation of A.
  • B
    Both A and R are correct but R is not the correct explanation of A.
  • C
    A is false but R is true.
  • D
    A is true but R is false.
Answer
Correct option: A.
Both A and R are correct and R is the correct explanation of A.
A
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Assertion (A) & Reason (B) MCQ - MATHS STD 8 Questions - Vidyadip