7. Chairs are arranged in 27 rows and 27 columns in a party palace. How many chairs are there in the party palace altogether? b. In a class, each of the students contributed as many rupees as there are number of students. If total collection was Rs. 169, what was the number of students in the class?

Let's answer each part of the question one by one.

Chairs in a Party Palace
The chairs are arranged in 27 rows and 27 columns. To find the total number of chairs, we need to multiply the number of rows by the number of columns:
Total number of chairs = 27 × 27
Calculating this, we get:
27 × 27 = 729
Therefore, there are a total of 729 chairs in the party palace.

Number of Students Contributing Money
In the class, each student contributed as many rupees as there are students. If the total collection was Rs. 169, we need to find out how many students were there.
Let's assume the number of students is n . According to the problem, each student contributed n rupees, so the total contribution is:
n × n = n 2
We know that the total collection is Rs. 169, thus:
n 2 = 169
To find n , we need to take the square root of both sides:
n = 169 ​
Calculating the square root, we find:
n = 13
Therefore, there are 13 students in the class.

Answered by SophiaElizab | 2025-07-21