(3080 + 6160) / 28

Answer: Option B

Explanation:

As per BODMAS rule first we will solve the terms in the bracket then other.
= 7500 + (25) = 7525

Answer: Option C

Explanation:

$$\begin{aligned} = \frac{1}{2+\frac{1}{2+\frac{1}{\frac{3}{2}}}} \end{aligned}$$
$$\begin{aligned} = \frac{1}{2+\frac{1}{2+\frac{2}{3}}} \end{aligned}$$

$$\begin{aligned} = \frac{1}{2+\frac{1}{\frac{8}{3}}} \end{aligned}$$

$$\begin{aligned} = \frac{1}{2+\frac{3}{8}} \end{aligned}$$

$$\begin{aligned} = \frac{1}{\frac{19}{8}} \end{aligned}$$

$$\begin{aligned} = \frac{8}{19} \end{aligned}$$

Answer: Option D

Answer: Option A

Explanation:

After applying BOMAS rule,
First Multiplication will be done then addition
So it will be 100 + 100 = 200

Answer: Option B

Explanation:

Let suppose total number of students in class are X.
Then from the question we can conclude it that,

$$\begin{aligned} X*\frac{1}{8}X = \frac{X}{2}*16 \\ => X = 64\\ \text{Total notebooks,} \\ = \frac{1}{8}X^2 \\ = \left( \frac{1}{8} * 64 * 64 \right) \\ = 512 \end{aligned}$$