If C 1 , C 2 , C 3 , . . . are sets such that

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If C1, C2, C3, . . . are sets such that Ck ⊃ Ck+1, k = 1, 2, 3, . . ., limk→∞ Ck is defined as the intersection C1 ∩ C2 ∩ C3 ∩ · · · . Find limk→∞ Ck if
(a) Ck = {x : 2 − 1/k < x ≤ 2}, k = 1, 2, 3, . . . .
(b) Ck = {x : 2 < x ≤ 2 + 1/k}, k = 1, 2, 3, . . . .
(c) Ck = {(x, y) : 0 ≤ x2 + y2 ≤ 1/k}, k = 1, 2, 3, . . . .

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Introduction To Mathematical Statistics

ISBN: 9780321794710

7th Edition

Authors: Robert V., Joseph W. McKean, Allen T. Craig

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