2
Q:
 A) 586 B) 578 C) 568 D) 566

Explanation:

=>

Q:

Derivative of sinx by first principle?

 A) -sinx B) -cosx C) cosx D) sinx

Explanation:

Thus, the derivative of sinx by first principle is cosx.

1 11
Q:

Simplify the following and find the value of ?

 A) 1134 B) 1237 C) 1187 D) 1249

Explanation:

4 39
Q:

Simplify

 A) 10 47/60 B) 11 45/73 C) 11 47/36 D) 10 35/48

Explanation:

The given equation is in Mixed fraction.

Now to solve this type of fractions,

8 86
Q:

 A) 68947 B) 69874 C) 70000 D) 76000

Explanation:

= 70,000.

9 304
Q:

Simplify $\left(2\sqrt{392}-21\right)+{\left(\sqrt{8}-7\right)}^{2}={\left(\mathbf{?}\right)}^{\mathbf{2}}$

 A) 4 B) 5 C) 6 D) 9

Explanation:

6 214
Q:

Find the value of '?'

 A) 166251 B) 166259 C) 166252 D) 166253

Explanation:

Given

Using unit digit method,

On LHS,

1 x 1 x 1 = 1

sqrt of last digit 1 => it must end with either 9 or 1

so now

1 x 1 = 1

1 x 9 = 9

On RHS,

? + 89

=> ? = ...1 - 89 = last digit is 11- 9 = 2

or

=> ? = ...9 - 89 = last digit is 9 - 9 = 0

Here in the options last digit 2 is option C.

10 262
Q:

1397 x 1397 = ?

Here what replaces '?'

 A) 1951609 B) 1821504 C) 2031489 D) 1847879

Explanation:

1397 x 1397

5 377
Q:

Given that 100.48 = x,  100.70 = y and xz = y2,  then the value of z is close to ___ ?

 A) 3.7 B) 2.7 C) 3.6 D) 2.9