Question

four numbers PQR and S are such the P<Q<R and R=S, their mean is 8, their mode is 10 and their range is 7. Find the value of P,Q,R and S?​

Answer 1

Average of terms = number of terms/sum of terms

⇒ p+q+r/3 =5

⇒p+q+r=15

and

s+t/2 =10

⇒s+t=20

So, average= p+q+r+s+t /5

= 15+20 /5

=7