Assertion (A): The output of addition of two series will be NaN, if one of the elements or both the elements have no value(s). Reason (R): While performing mathematical operations on a series, by default all missing values are filled in with 0.

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KollegeApply · Accepted Answer

(A) is true and (R) is false. Explanation: 1. Assertion (A): If one or both elements have no values, the addition of two series will produce NaN. True: When adding two series in pandas, missing values (NaN) in any series will result in NaN in the output by default. 2. Reason (R): When executing mathematical operations on a series, all missing values are automatically filled up with zero. False: Missing values are not automatically replaced with 0 unless expressly stated by methods such as fillna().

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