Excel has native regex support, and it works exactly how you'd expect.

Abstract: Source number estimation is a key challenge in multi-sensor array signal processing, focused on accurately determining the number of signal sources based on observed data. This problem is ...

April 1 (Reuters) - The number of migrants caught illegally crossing the U.S.-Mexico border in March fell to the lowest level ever recorded, according to initial figures released by the U.S.

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. An injured passenger, rescued by security forces ...

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In the given array, number 2 is missing. So, 2 is the answer. Hey @yesiamrajeev I want to contribute in hactoberfest2024. If you find this problem useful please add a tag to it and assign me the same.