Answer:
i dont understand, can you elaborate
Step-by-step explanation:
Answer:
0.4
Step-by-step explanation:
Given
60 % wear neither ring nor a necklace
20 % wear a ring
30 % wear necklace
This question can be Solved by using Venn diagram
If one person is choosen randomly among the given student the probability that this student is wearing a ring or necklace is


The sum of probabilty is equal to 1 because it completes the set
Therefore the required probabilty is 0.4
I think its runner B because its lower down then runner A hope this helps
Answer:
72+ 18x
Step-by-step explanation:
9x+72+5x+4x
72+ 18x