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anonymous
 one year ago
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anonymous
 one year ago
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This Question is Closed

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1nPr=n!/(nr)! . 1) 6!/(63)!=6*5*4=120 . 2) 2/6 * 120 = 40 . 3) 2/6 * 120 = 40 . 4) 1/6 * 120 = 20

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I do not understand the 2.)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0looks there are 5 questions including the top most question ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes yes pls explain each question to me

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1did u understand the third one??

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436260927038:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes @imqwerty there are 2 even #s

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0im just making sure we all are referring to the same question number :)

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.1no i missed that 0 question

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i do not understand this less than 400

princeharryyy
 one year ago
Best ResponseYou've already chosen the best response.0>>less than 400 :) numbers starting with 2 => keeping two fixed we got two places to fill. => 1way(fixed for 2) * 5ways(to fill the tens place) *4ways(to fill the units place) =>1*5*4 =20 => similarly for numbers starting from 3 => total ways 1*5*4 = 20 total 20+20 = 40 numbers @silverxx
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