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What Does ↔ Mean In Maths? [Solved]
Symbol ↔ or ⟺ denote usually the equivalence, commonly known also as “NXOR”, “if and only if” or “iff” for short (see also its Wikipedia page). More precisely p↔q is equal to (p→q)∧(q→p)1 Apr 2016
Math Antics - Mean, Median and Mode
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Finding Mean, Median, and Mode | Math with Mr. J
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How to Find the Mean | Math with Mr. J
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