Which pairs of numbers represent a number and its reciprocal?
1 and 1
2/3 and -3/2
1/2 and 5
6 and 1/6
-4/7 and -7/4

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.