Question

1乘2一直乘到100是多少。急啊！！！

Answer 1

叫100阶乘表示100100=93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253691x2x3x4x5x6x7x8x9x10x11x12x13x14x15x16x17x18x19x20x21x22x23x24x25x26x27x28x29x30x31x32x33x34x35x36x37x38x39x40x41x42x43x44x45x46x47x48x49x50x51x52x53x4x55x56x57x58x59x60x61x62x63x64x65x66x67x68x69x70x71x72x73x74x75x76x77x78x79x80x81x82x83x84x85x86x87x88x89x90x91x92x93x94x95x96x97x98x99x100 =用乘交换率 =(1x2x3x4x5x6x7x8x9x10)x(11x12x13x14x15x16x17x18x19x20)x(21x22x23x24x25x26x27x28x29x30)x(31x32x33x34x35x36x37x38x39x40)x(41x42x43x44x45x46x47x48x49x50)x(51x52x53x4x55x56x57x58x59x60)x(61x62x63x64x65x66x67x68x69x70)x(71x72x73x74x75x76x77x78x79x80)(81x82x83x84x85x86x87x88x89x90)x(90x91x92x93x94x95x96x97x98x99x100) 数太 100!=9.3326215443944152681699238856267e+15730414093201713378043612608166064768844377641568960512000000000000 共24零 点错都7920827223758251185210916864000000000000000000000000

Answer 2

9.33 26 215×10的157次

Answer 3

1*2+2*3+3*4+.+100*101 =1/3*1*2*3+1/3[2*3*4-1*2*3]+1/3[3*4*5-2*3*4]+.+1/3[100*101*102-99*100*101] =1/3[1*2*3+2*3*4-1*2*3+3*4*5-2*3*4+.+100*101*102-99*100*101] =1/3*100*101*102 =343400

1乘2加2乘3一直加到100乘101等于多少？

因为：1*2=1*(1+1)=1^2+1      1-N的平方和=n(n+1)(2n+1)/6

所以：1*2+2*3+……+100*101 = 1^2+2^2+3^+…99^2+100^2+1+2+3+…100 =100/6（100+1）（2*100+1）+5050=343400

Answer 4

933262154439441526816992388562667后跟24个0

Answer 5

9332621544394415268169923885 6266700490715968264381621468 5929638952175999932299156089 4146397615651828625369792082 7223758251185210916864000000 000000000000000000