若每次击中靶的概率为0.75,射击6次,最可能集中几次?答案是5次,

击中0次的概率C(6 0)*[0.75^0]*[0.25^6]=0.0002
击中1次的概率C(6 1)*[0.75^1]*[0.25^5]=0.0044
击中2次的概率C(6 2)*[0.75^2]*[0.25^4]=0.033
击中3次的概率C(6 3)*[0.75^3]*[0.25^3]=0.132
击中4次的概率C(6 4)*[0.75^4]*[0.25^2]=0.297
击中5次的概率C(6 5)*[0.75^5]*[0.25^1]=0.356
击中6次的概率C(6 6)*[0.75^6]*[0.25^0]=0.178