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31-01-2024
Mathematics

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Number of dissimilar terms in the expansion of (x1+x2+.....+xn)3 is
A.n² (n+1)²/4
B.n(n+1)(n+2)/6
C.ⁿ⁺¹C₂+ⁿC₂
D.n³+3n²/4

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