Persons A and B. Person A picks a random no. from 1 to 1000.Then person B picks a random no. from 1 to 1000. What is the probability of B getting no. greater then what A has picked.
Pick one:  A) 0.3995  B) 0.4995  C) 0.5995  D) 0.6995  E) 0.7995
Probability of A choosing 1 and 0.4995 greater = (1/1000)*(999/1000);   Probability of A choosing 2 and 0.4995 greater = (1/1000)*(998/1000);   Probability of A choosing 3 and 0.4995 greater = (1/1000)*(997/1000); ...;   Probability of A choosing 998 and 0.4995 greater = (1/1000)*(2/1000);   Probability of A choosing 999 and 0.4995 greater = (1/1000)*(1/1000);   Total = (1/1000)*(1/1000)*(999+998+997+...+2+1) = (1/1000)*(1/1000)*(999*1000/2)= 
<gadget id="calculator">(1/1000)*(1/1000)*(999*1000/2)</gadget>
<output>999/2_000 = around 0.4995</output>
0.4995   ANSWER:0.4995
<result>B</result>
Persons A and B. Person A picks a random no. from 1 to 1000.Then person B picks a random no. from 1 to 1000. What is the probability of B getting no. greater then what A has picked.