Question

Find the least square number divisible by 5, 10, 15. (a) 100 (b) 625 (c) 900 (d) 225​

Answer 1

Answer:-

900

Verification:-

$\\ \sf\longmapsto \dfrac{900}{5}=180$

$\\ \sf\longmapsto \dfrac{900}{10}=90$

$\\ \sf\longmapsto \dfrac{900}{15}=6$

Answer 2

Answer:

a) 100

→ $\frac{100}{5}$ = 20

→ $\frac{100}{10}$ = 10

→ $\frac{100}{15}$ = 6⅔

100 is not divisible by 15

b) 625

→ $\frac{625}{5}$ = 125

→ $\frac{625}{10}$ = 62.5

→ $\frac{625}{15}$ = 41.6

625 is not divisible by 10 and 15.

c) 900

→ $\frac{900}{5}$ = 180

→ $\frac{900}{10}$ = 90

→ $\frac{900}{15}$ = 60

900 is the correct answer.

d) 225

→ $\frac{225}{5}$ = 45

→ $\frac{225}{10}$ = 22.5

→ $\frac{225}{15}$ = 15

225 is not divisible by 15

900 is the correct answer.