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If the 2nd,3rd and 4th terms in the expansion of (x+a)n are 240,720 and 1080 respectively, then the value of (x−a)n is |
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Answer» If the 2nd,3rd and 4th terms in the expansion of (x+a)n are 240,720 and 1080 respectively, then the value of (x−a)n is |
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