Which of the following fractions lie between 38 and 78 on the number line?
12
Converting the given fractions into equivalent fractions with denominator 8, we have
1×42×4=48
1×24×2=28
9×18×1=98
20÷216÷2=108
Since 3<4<8, we have 38<48<78
i.e., 38<12<78
Thus, 12 lies between 38 and 78.