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If the coefficients of three consecutive terms in the expansion of `(1+x)^n` are in the ratio 1:7:42, then find the value of `ndot`

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CENGAGE ENGLISH-BINOMIAL THEOREM-All Questions
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  11. Using the principle of mathematical induction, prove that (2^(3n)-1) i...

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  14. Prove that the coefficient of x^r in the expansion of (1-2x)^(-1/2) is...

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