$$\begin{aligned} (\frac{\sqrt{625}}{11} \times \frac{14}{\sqrt{25}} \times \frac{11}{\sqrt{196}}) \end{aligned}$$

Answer: Option D

Explanation:

Tip: Please check the question carefully before answering. As 3a is not under the root we can convert it into a formula , lets evaluate now :

$$\begin{aligned} = \sqrt{4a^2 - 4a + 1} + 3a \end{aligned}$$

$$\begin{aligned} = \sqrt{(1)^2 + (2a)^2 - 2x1x2a} + 3a \end{aligned}$$

$$\begin{aligned} = \sqrt{(1-2a)^2} + 3a \end{aligned}$$

$$\begin{aligned} = (1-2a) + 3a \end{aligned}$$

$$\begin{aligned} = (1-2a) + 3a \end{aligned}$$

$$\begin{aligned} = 1 + a = 1 + 0.1039 = 1.1039 \end{aligned}$$

Answer: Option A

Answer: Option A

Explanation:

as .4 * .4 = 0.16

Answer: Option C

Explanation:

$$\begin{aligned} = \sqrt{248+\sqrt{64}} \end{aligned}$$

$$\begin{aligned} = \sqrt{248+8} \end{aligned}$$

$$\begin{aligned} = \sqrt{256} \end{aligned}$$

$$\begin{aligned} = 16 \end{aligned}$$

Answer: Option C

Explanation:

21*21*21 = 9261