What is the total number of terms in the expansion of (x+y)7 ?, 6, 7, 8, 9, What is the first term in the expansion of (a+b)5 ?, a5, b5, 5ab, 1, What is the coefficient of x2 in th expansion of ( 1 + x )4 ?, 4, 6, 8, 12, What is the coefficient of x in the expansion of ( 1 + 3x )2 ?, 3, 6, 9, 12, What is the coefficient of x in the expansion of ( x + 4 )2?, 4, 8, 16, 2, If the exponent n=4 (even),how many total terms are there,and which one is the middle term?, 4 terms;2nd term, 5 terms;3rd term, 4 terms;3rd term, 5 terms;2nd term, If the exponent n=5 (odd), how many middle terms are there in the expansion?, None, Exactly one middle term, Two middle terms, Three middle terms

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