Question

A General arranges his soldiers in rows to form a
perfect square. He finds that in doing so,
60 soldiers are left out. If the total number of
soldiers be 8160. Then, the number of soldiers in
each row is
(a) 90
(b) 91
(c) 92
(d) 80​

Answer 1

Answer:

the answer is a.90

Step-by-step explanation:

A/Q

total no of soldiers - no of soldiers remaining

8160-60

8100

thus,(no of rows)^2= 8100

no of rows = √8100

no of rows = 90

therefore the no of soldiers in each row is 90

Answer 2

Step-by-step explanation:

We know that the total number of soldiers = 8160

Number of soldiers left out = 60

Number of soldiers arranged in rows to form a perfect square = 8160 – 60 = 8100

∴ number of soldiers in each row = √8100

= √ (9×9×10×10)

= 9×10

= 90