UPSC NDA Math Model Paper 2
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Question : 5 of 120
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If ( 1 − x + x 2 ) n = a 0 + a 1 x + a 2 x 2 + . . . . . + a 2 n x 2 n , a 0 + a 2 + a 4 + . . . . . . a 2 n
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