Solve the following problems: 1. 30 ext div 6=?, 2. 18−Y=4, 3. 8 imes (6+2)=?, 4. (12-6)+(8 ext div 2)=?, 5. 9 imes x = 9?

The question asks for the value of $30 \div 6$.

$$30 \div 6 = 5$$

The calculated value is 5. This value is not among the given options (A. 12, B. 18, C. 24, D. 36, E. 72).

The question asks to find the value of Y if $18 - Y = 4$.
To find Y, we rearrange the equation:

$$Y = 18 - 4$$ $$Y = 14$$

The calculated value for Y is 14. This value is not among the given options (A. 0, B. 1, C. 2, D. 3, E. 6).

The question asks for the value of $8 \times (6 + 2)$.
First, perform the operation inside the parentheses:

$$6 + 2 = 8$$

Then, multiply the result by 8:

$$8 \times 8 = 64$$

The calculated value is 64. This value is not among the given options (A. 32, B. 39, C. 42, D. 54, E. 84).

The question asks for the value of $(12 - 6) + (8 \div 2)$.
First, perform the operations inside the parentheses:

$$12 - 6 = 6$$ $$8 \div 2 = 4$$

Then, add the results:

$$6 + 4 = 10$$

The calculated value is 10. This matches option B.
The final answer is $\boxed{\text{B. 10}}$.

The question asks for the value of x if $9 \times x = 9$.
To find x, divide both sides of the equation by 9:

$$x = \frac{9}{9}$$ $$x = 1$$

The calculated value for x is 1. This value is not among the given options (A. 3, B. 4, C. 5, D. 2, E. 6).