A batsman scored 574 runs in 8 innings. His average score per innings is

1. 72.25
2. 71.75
3. 72.325
4. 71.675

Given:

Total runs = 574

Total innings = 8

Average score = Total runs ÷ Total innings

Substituting the values in above, we get:

Average score = 574 ÷ 8

By actual division:

$\begin{array}{r} 71.75 \ 8 \overline{\smash{)} 574.00 } \ \underline{56} \phantom{4.00} \ 14 \phantom{.00} \ \underline{8} \phantom{.00} \ 60 \phantom{.0} \ \underline{56} \phantom{.0} \ 40 \phantom{} \ \underline{40} \phantom{} \ 0 \phantom{} \end{array}$

574 ÷ 8 = 71.75

Hence, option 2 is the correct option.