A sequence of positive and negative numbers contain q numbers. If the sequence begins with a negative number and q is an odd number how many positive numbers are in it.	Choose the correct choice from the following options:
A) q/(2+1)  B) (q+1)/2  C) (q-1)/2  D) q/(2-1)  E) q/(2+2)
Lets put values for x, say q=7 since it's odd   and first number is neg so sequence will be {neg,pos,neg,pos,neg,pos,pos} we can see that it has 3 positive terms   so putting q=7 in the options,   option (q-1)/2 = (q-1)/2 =&gt; 7-1/2 = 3 , the number of positive integers   So, (q-1)/2 is the answer
<result>C</result>
A sequence of positive and negative numbers contain q numbers. If the sequence begins with a negative number and q is an odd number how many positive numbers are in it.