Q52.
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If A=
a o
1 2
3 4
and B=
a, beN , then
1
ob
O (A) there exists exactly one B such that AB=BA
O (B) there exists more than one but finite number of B's such that AB=BA
O (C) there cannot exist any B such that AB=BA
O (D) there exists infinitely many B's such that AB=BA
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Answer:
jgxjdshjbcjsbckwdbjbwjdcnjkCBFKJDNVBESJADSNM
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