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M: +2.00/-0.50

[SSC CGL 5th Dec 2022 Shift-3 With Answers]

A

ab - a - b + 1 = (a - 1) (b - 1)

B

ab + a - b + 1 = (1 - a) (1 - b) (1 - a) (1 + b)

C

ab - a - b + 1 = (1 - a) (b - 1)

D

ab - a - b + 1 = (a - 1) (1 - b)

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