17
Q:

# A sum of Rs.1890 has to be used to give 9 prizes to the customers of a super market for their overall academic purchases. If each prize is Rs.30 less than its preceding price, what is the least value of the price ?

 A) 90 B) 95 C) 85 D) 80

Explanation:

Let the least value of the prize = Rs. x

Then the next value of the prize is x+30 , x+60, x+90, ....x+240.

Given total amount of cash prizes = Rs.1890

--> x + (x+30) + (x+60) + (x+90) + ....+ (x+240) = 1890

--> 9x + (30 + 60 + 90 + 120 + 150 + 180 + 210 + 240) = 1890

--> 9x + 30(1 + 2 + 3 + 4....+ 8) = 1890

--> 9x + 30(36) = 1890

--> 9x = 810 --> x=90

Hence the least value of the prize x=90

Q:

5068 / 37 x 4 = ?

 A) 548 B) 625 C) 214 D) 745

Explanation:

? = 5068 x 4/37

? = 548

1 41
Q:

 A) 4X B) 2X C) 2X^2 D) X/2

Explanation:

Here the given expression,

is an algebraic expression. Here in this expression the terms are like terms. Now to add them, add their coefficients.

Here in the given expression, the like terms are two

Hence, adding their coefficients i.e, 1 + 1 = 2

Therefore,

= 2$X2$.

0 236
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.

2 373
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.

4 393
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.

1 350
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.

3 599
Q:

Find the Value of ?

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

Explanation:

This can be done in a method called Approximation.

Now,

7 551
Q:

Can you Solve  =

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

Explanation: