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Tag: BINOMIAL EXPANSION

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the values of a, b and n

January 18, 2014 Leave a Comment

The 3rd , 4th and 5th terms in the expansion of (a + b)n are respectively 84, 280 and 560. Find the values of a, b and n.

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The coefficient of terms in the expansion are equal

January 3, 2014 Leave a Comment

Find the value of r, if the coefficient of (2r + 4)th and (r – 2)th terms in the expansion of (1 + x)18 are equal.

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Terms of the expansion

December 31, 2013 Leave a Comment

Find ‘a’ if the 11th and 12th terms of the expansion (2 + a)40 are equal.

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