8th Class
Mathematics
Squares and Square Roots
Question Bank
Square and Square Roots
question_answer
A general arranges his soldiers in rows to form a perfect square. He finds that in doing so, 60 soldiers are left out, when the total number of soldiers is 8160. What is the number of soldiers in each row?
A) 100
B) 90
C) 80
D) 70
Correct Answer:
B
Solution :
(b): 60 Soldiers left \[\Rightarrow \] perfect square \[=8160-60=8100.\]