A subset of {2, b} is: (A) {2} (B) {{ b }} (C) { (2) } (D) ( {b})

Question

A subset of {2, b} is:
(A) {2} (B) {{ b }} (C) { (2) } (D) ( {b})

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Yến Oanh 1 year 2021-08-30T14:15:30+00:00 1 Answers 5 views 0

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    2021-08-30T14:16:59+00:00

    sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )