7 (6) + 14!!! And this needs to be 20 characters long so I’m adding this
Answer: 88
Step-by-step explanation:
Given
The first row has 16 seats
then there are 3 more seats in each row
this follows an AP with the first term
and common difference 
So, no of seats in the 25 th row is

Thus, there are 88 seats in the 25 th row
Answer:
x = 2y
Taking the cost of a notebook to be ₹ x and that of a pen to be ₹ y
hope that helps...
Height at 3 sec: 15 meters
Max height: 20 meters