4 ÷ [(3-2 ÷ 6]], the final result in brackets is 4 times 6=24, which is a typical four operations involving fractions.

(6× 3+(4+2)), first calculate what is in brackets, and get 18+6=24, which is a simple four operations involving multiplication and addition.

[(4 ÷ 2 ÷+6] × 3, calculate what is in brackets first, and whether there are brackets here is of little significance. The final result is 8 times 3=24, and four operations.

2+[| 3× 6 |+4], first multiply to get 18, then add brackets to get 22, and finally get 24 and four operations.

4× [﹙ 6 ﹚ 2 ﹚+3], first calculate the division to get 3, then calculate the addition in brackets to get 6, and finally calculate the multiplication, and the final result is 24 and four operations.

Extended data:

Matters needing attention in comprehensive calculation formula (four operations):

1. If there is only addition and subtraction or only multiplication and division, it is calculated from left to right, for example, 2+ 1- 1=2. First calculate the number of 2+ 1, and then subtract 1 from the number of 2+ 1.

2. If primary operation and secondary operation exist at the same time, the secondary operation is calculated first.

3. If there are primary, secondary and tertiary operations (i.e. power, root and logarithm operations) at the same time, calculate the tertiary operation first, and then calculate the other two levels.

4. If there are brackets, count the numbers in brackets first (no matter what level, count first).

5. The third level should be counted in brackets, and then the second and first levels should be counted.

References:

Baidu encyclopedia-four operations