Math

Upside down “A” in mathematics: Meaning of “∀” explained

In maths, in the beginning, the only things that aren’t numbers are +,-, ÷, ×, and =. But the more you study maths, the more symbols seem to pop up. Today, we’ll be talking about ∀, also known as the “Universal Quantifier”. What does the upside-down A mean? The universal quantifier symbol “∀” means “for …

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Why is the value of 5-5×5+5 = -15? Easy explanation of correct approach

Sometimes in maths, you’ll find a question that you look at, and it just baffles you how you’re supposed to get to the answer. This could be because it uses symbols that you don’t recognise, or it could be because the alphabet has been thrown in there. But sometimes, you recognise what all of the …

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