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Algebraic Expressions — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSAlgebraic Expressions1 Mark
MCQ
Assertion (A): $5 x^2 y-3 x y^2+2 y^2 x$ is a trinomial.
Reason (R): An algebraic expression containing three terms is a trinomial.
  • A
    Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A)
  • B
     Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation
    of Assertion (A). 
  • C
    Assertion (A) is true but Reason (R) is false.
  • ✓
    Assertion (A) is false but Reason (R) is true.
✓

Answer

Correct option: D.
Assertion (A) is false but Reason (R) is true.
(d): $5 x^2 y-3 x y^2+2 y^2 x=5 x^2 y-3 x y^2+2 x y^2=5 x^2 y-x y^2$, which is a binomial.
$\therefore A$ is false.
R is true (by the definition of trinomial).

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