Step 1: Analyze the given conditions.
- Q is ahead of P. This means Q stands before P.
- R is between P and S. So, P and S are at the ends, with R between them.
- 5 is at the end of the queue. This implies 5 is either at the back or front, but not in the middle.
Step 2: Build the queue.
From the above conditions, the order of the people in the queue can be deduced as:
\[
Q, P, R, S, 5.
\]
Step 3: Conclusion.
Since Q is ahead of P, and based on the arrangement, Q is at the front of the queue.
Thus, the correct answer is (a) Q.
Five friends A, B, C, D, and E are sitting in a row facing north, but not necessarily in the same order:
B is to the immediate left of C
E is not at any of the ends
D is to the right of E but not next to C
A is at one of the ends
Who is sitting in the middle?
"In order to be a teacher, one must graduate from college. All poets are poor. Some Mathematicians are poets. No college graduate is poor."
Which of the following is true?
How many triangles are there in the figure given below? 