/sci/ - Science & Math

roll 2 dice
find P( at least 1 die lands on 6 | dice show different #'s )

if first dice is 1 , P = 1/5
if first dice is 2 , P = 1/5
if first dice is 3 , P = 1/5
if first dice is 4 , P = 1/5
if first dice is 5 , P = 1/5
if first dice is 6 , P = 1

thus P = 5( 1/6 * 1/5 ) + 1/6 = 1/3
P( at least 1 die lands on 6 | dice show different #'s ) = 1/3 .