Seven friends M, N, O, P, Q, R and S, each has a different age. Only two people are older than Q. P is older than Q but younger than O. M is older than R but younger than S. Only three people are younger than S. N is the youngest among all. The age of how many persons is between the ages of Q and R?

2

Seven friends M, N, 0, P, Q, R, and S

STEP 1: So first in the question, it is given that only two people are older than Q so the resulting framework will be:

So, _> _> Q> _> _> _> _

STEP 2: 5th line of the question states that only 3 people are younger than S so the resulting formation

So, _> _> Q> S> _> _> _

STEP 3: Now please focus on two lines stating that P is older than Q but younger than O and M is older than R but younger than S and N is the youngest of all so the final formation will be:

So, O>P>Q>S>M>R>N

Therefore, The age of two persons is between the ages of Q and R.