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How many symmetric relations are there on a set with (5) elements?

Answer and explanation

Correct answer: (2^{15})

Step 1: The number of symmetric relations on (n) elements is (2^{\frac{n(n+1)}{2}}). Step 2: Putting (n=5), the exponent is (\frac{5\cdot6}{2}=15). Step 3: Identify counting questions on symmetric relations before applying the formula.

Related tags

Counting FormulaSymmetric RelationClass 12Relations And FunctionsMathematicsClass 12 Mcq

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