Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Select the correct answer using the options given below: Assertion (A): The sum of all coefficients in the binomial expansion of (x2 + x - 3)19 is -1. Reason (R): The sum of coefficients in the expansion of (x + y)n is 2n.

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Mathematics · Binomial Theorem

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

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Answer 1

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

Answer 2

(A) is false, but (R) is true.

Answer 3

(A) is true, but (R) is false.

Answer 4

Both (A) and (R) are true and (R) is the correct explanation of (A).

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