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A pair of dice is thrown. Find the probability of getting a sum of

   

or more, if

   

appears on the first die

Solution:

In throwing a dice, total possible outcomes

   

So

   

For two dice

   

Favorable cases where the sum is 10 or more with

   

Event of getting the sum is

   

or more with

   

Hence, the probability of getting a sum of

   

or more with