Q.Let E ⊆ ⊆ ⊆ℝ ℝ ℝ, f: E → ℝ ℝ ℝ and a ∈E. Suppose there exists a positive real number 'r' such that (a - r, a+r) ∩ E = {a}, then f is
Correct answer: continuous at a
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