14
Q:

# What should come in place of the question mark(?) in the following questions ?

 A) 1 7/12 B) 1 5/12 C) 3 7/12 D) 3 1/12

Explanation:

? = (3 + 4 - 2 - 1) + ( 1/6 + 1/2 - 2/3 - 11/12)

= 4 + [(2+6-8-11)/12]

= 4 - (11/12 )= 31/12.

Q:

5x - 6 = 3x - 8

Solve the above equation.

 A) 2 B) -1 C) -2 D) 1

Explanation:

Given 5x - 6 = 3x - 8

5x - 3x = -8 + 6

2x = -2

=> x = -1.

0 106
Q:

3 x 3 + 3 - 3 + 3 = ?

 A) 9 B) 12 C) -3 D) 3

Explanation:

Using BODMAS law,

3 x 3 + 3 - 3 + 3 =

3 x 3 = 12

= 12 + 3 - 3 + 3

=  9 + 3

= 12

Hence, 3 x 3 + 3 - 3 + 3 = 12.

1 134
Q:

What is x squared plus x squared?

 A) 4x B) 2x^2 C) x^4 D) 2x

Explanation:

In an algebraic expression, like terms are terms that contain the same variables raised to the same powers. Calculating x-squared plus x-squared is a matter of combining like terms.

Now x^2 + x^2 = 2x^2

Hence, x-squared plus x-squared is equal to 2 times x squared.

1 131
Q:

What is

 A) 0 B) 42 C) 50 D) 57

Explanation:

Given 7 + 7/7 + 7 x 7 - 7

By using BODMAS rule,

7 + 1 + 7 x 7 - 7

= 8 + 49 - 7

= 57 - 7

= 50.

Hence 7 + 7/7 + 7 x 7 - 7 = 50.

1 406
Q:

Find the Value of ?

 A) 81 B) 77 C) 73 D) 89

Explanation:

This can be done in a method called Approximation.

Now,

6 382
Q:

Can you Solve  =

 A) 112 B) 56 C) 0 D) 98

Explanation:

8 354
Q:

The last two digits of $2151415$?

 A) 81 B) 61 C) 91 D) 51

Explanation:

Unit digit of this expression is always 1 as the base ends with 1.

For the tenth place digit we need to multiply the digit in the tenth place of the base and unit digit of the power and take its unit digit.

i.e, tenth place digit in 2151 is 5 and

tenth place digit in power 415 is 1

And the units digit in the product of 5 x 1 = 5

Therefore, last two digits of $2151415$ is 51.

7 589
Q:

What is the value of P in the following Equation ?

 A) 3.9 B) 4.1 C) 3.7 D) 4.5

Explanation:

Given equation is

Here it is in the form of

Here m = 2.5 , n = p, m+n = 7

=> 2.5 + p = 7

=> p = 7 - 2.5

=> p = 4.5