If a number between 10 and 30 (inclusive) at random. What is the probability that the tens digit is greater than ones digit?  Answers.
A) 31/41  B) 4/21  C) 14/41  D) 27/41  E) 11/41
If tens digi is 3 ---&gt; ones digit : 0,   If tens digi is 2 ---&gt; ones digit : 0, 1   If tens digi is 1 ---&gt; ones digit : 0   So the number of numbers whose tens digit is greater than ones digit is 11.   The total number is   30-10+1= 
<gadget id="calculator">  30-10+1</gadget>
<output>21</output>
21.   So the probability is 4/21.   The answer is (4/21).
<result>B</result>
If a number between 10 and 30 (inclusive) at random. What is the probability that the tens digit is greater than ones digit?