If a + b + c = 10 and a 2 + b 2 + c 2 = 48, then the value of ab + bc + ca is _______.

SSC CPO 9 Nov 2022 Shift 2 Paper

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If a + b + c = 10 and a² + b² + c² = 48, then the value of ab + bc + ca is _______.

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