Which of the following numbers is divisible by 3?

1. 50762

2. 42063

3. 52871

4. 37036

A number is divisible by 3 if the sum of its digits is divisible by 3.

1. 50762: sum = 5 + 0 + 7 + 6 + 2 = 20, not divisible by 3.

2. 42063: sum = 4 + 2 + 0 + 6 + 3 = 15, divisible by 3. ✓

3. 52871: sum = 5 + 2 + 8 + 7 + 1 = 23, not divisible by 3.

4. 37036: sum = 3 + 7 + 0 + 3 + 6 = 19, not divisible by 3.

Hence, option 2 is the correct option.