排列组合二项式定理填空题题（ questions of filling and filling in the binomial theorem）.doc

排列组合二项式定理填空题40题（40 questions of filling and filling in the binomial theorem） The most challenging challenge is to improve yourself. Michael F Staley 40 questions of filling and filling in the binomial theorem 1, known, x=____ John 2, the coefficients in the expansion is ____ (the numerical representation). These 3 known (1+x) n expansion coefficients of two items in an adjacent type is 8:15, the minimum value of n is ____. In 4, hanlinhui (2x) expansion in 5, the coefficient of X5 is ____ Highly In 5, +an-1 (1+x) n=1+a1x+a2x2+... Xn-1+anxn, if 2a4=3an-6, then n value is ____. 6, 15 (1 + x) hanlinhui expansion for the _____________ with x2 type. Hanlinhui, 7 (1+x) + (1+x) + (1+x) +... + (1+x) expansion coefficients in and is. If 2000, 8 is positive integer n=____________. These 9, 7 people sitting in a row in order not photography, a B C three change and not adjacent to a total of ________ area. John, 10, a math teacher and four students winning a row if the teacher does not row of pictures, at both ends, is how many different ways ____________. John 11, from any 6 sets and 5 sets of the original computer computer assembly selected 5 units, of which at least 2 sets of each original and assembling computer, choose different methods have ____________. Hanlinhui 12, set M={a, B, c}, N={a1, B1, c1}, M to the number of mapping on N for ________. These 13 sets, {11, 7,0,1,2,3,5} from each take 3 distinct elements as a straight line in Ax+By+C=0, B, C letter A, the linear slope is less than zero total ________. The 14, known, m=____________. The number of all subsets of a set of 15 highly, containing 10 elements of S, the number of subsets of 3 elements is T, the value of ________. Hanlinhui (ax+1) in 16, 7 in the expansion, the X3 coefficient is the arithmetic mean coefficient and X4 coefficient of X2, if the real a 1, then a=____________. 17, the imperial expansion coefficient X2 is ________.. Hanlinhui, if 18 (1+2x) 6 two in second than it was adjacent to the scope of X