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_______ adds numbers to return the sum, or adds numbers and a date to return a new date.

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_______ adds numbers to return the sum, or adds numbers and a date to return a new date.

(a) $addnum

(b) $setadd

(c) $adds

(d) $add

This question was addressed to me during an internship interview.

This intriguing question originated from Pipeline Limits in division Aggregation Concepts and Aggregation Mechanics of MongoDB

1 Answer

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Best answer
The correct option is (d) $add

For explanation: If adding numbers and a date, treats the numbers as milliseconds.

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