Question 492946
If you toss 2 dice, the highest you can get
is {{{ 6 + 6  = 12 }}}, so
{{{ P(15) = 0 }}} Zero probability means it
is impossible and can't happen.
A {{{ 1 }}} for a probability means it MUST happen
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P(6)
Find all the ways you can get {{{6}}} with 2 dice
{{{ 5 + 1 = 6 }}}
{{{ 1 + 5 = 6 }}}
{{{ 2 + 4 = 6 }}}
{{{ 4 + 2 = 6 }}}
{{{ 3 + 3 = 6 }}}
So, there are 5 ways to roll {{{6}}} with 2 dice
There are a total of {{{ 6*6 = 36 }}} ways
to roll 1 through 12 with 2 dice, so
the probability  {{{ P(6) = 5/36 }}}