Find ten rational numbers between 2/5 and 1/2.

2/5 and 1/2 → 2/5 = 4/10 and 1/2 = 5/10
Therefore, ten rational numbers are 4/10, 41/100, 42/100, 43/100, 44/100, 45/100, 46/100, 47/100, 48/100, 49/100, 5/10
This question can have different multiple solutions too.