Two fair dice are rolled times. Let the random variable represent the number of times that the sum occurs. The table below describes the probability distribution. Find the value of the missing probability.
00.64722784850823
10.29419447659465
20.0534899048353909
3
40.000221032664609053
54.01877572016461e-06
Would it be unusual to roll a pair of dice times and get no s?
(enter YES or NO)

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