Given below are two statements, one is labelled as Assertion (A) and the other…
PYQ UPPSC LT Grade (Assistant Teacher) 2025
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.
- A.
(A) is false, but (R) is true.
- B.
(A) is true, but (R) is false.
- C.
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- D.
Both (A) and (R) are true and (R) is the correct explanation of (A).
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