[" (1) at least one of the children is a...

[" (1) at least one of the children is a boy,"],[" (ii) the elder child is a boy."],[" Show that the relation "S" in the set "A={x in Z" 1"0<=x<=12}" piven by "],[S={(a,b):a,b in Z,|a-b|" is divisible by "4}" is an equivalence relation.Find the set "],[" of all elements related to "1" ."]

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[" (1) at least one of the children is a boy,"],[" (ii) the elder child is a boy."],[" Show that the relation "S" in the set "A={x in Z" 1"0<=x<=12}" piven by "],[S={(a,b):a,b in Z,|a-b|" is divisible by "4}" is an equivalence relation.Find the set "],[" of all elements related to "1" ."]

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