Question

A die is rolled what is the probability that number on the upper face is 7. a) 0 b) Y 2 c) 1/3 d) 1/6 ​

Answer 1

Answer:

Step-by-step explanation:

Number of possible outcomes when die is thrown once =6.

The die is rolled twice. Hence number of possible outcomes =6×6=36

Now we need to find the cases when the product of digits on the upper face is zero.  

For that either one of the throw should give zero as upper face or both should give zero as upper face.

When die is rolled first time and upper face is zero, the second roll can be 0,1,2,3,4,5.  

Hence there are six favourable outcomes.

Now if the first outcome any number other than 0, the second outcome should be 0. The first outcome can be 1,2,3,4 or 5 in this case. Hence there are five favorable outcomes.

Hence total number of cases where the product is zero =6+5=11.

Probability =  

36

11

​  

 

Answer 2

Answer:

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