Question

___ is the smallest number that divides 0.8, 0.06 and 0.4 completely leaving zero as the remainder and an integer quotient. (Provide a numerical value.)

Answer 1

Highest common factor (HCF) of two or more numbers is the greatest number which divides each of them exactly.
We can convert the given decimals to integers by multiplying all of them by 100.
$0.8\times 100=80$
$0.06\times 100=6$
$0.4\times 100=40$
80 = $2^4\times 5$

6 = $2\times 3$

40 = $2^3\times 5$
$\Rightarrow$HCF of 80, 6 and 40 = 2
$\therefore$ The HCF of 0.8, 0.06 and 0.4 = $\frac{2}{100}=0.02$