In binomial expansion of (a-b)^{n}, n \\geq 5, the sum of the 5^{\text{th }} and 6^{\text{th }} terms is zero. Then {{ a }}/{b} is equal to -

UPSC NDA Math Model Paper 7

Question : 36 of 120

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In binomial expansion of (a−b)n,n≥5, the sum of the 5th and 6th terms is zero. Then

is equal to -

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