Quantitative Aptitude Questions and Answers section on “Algebra” with solution and explanation for competitive examinations such as CAT, MBA, SSC, Bank PO, Bank Clerical and other examinations.

# Algebra

If x – y = 2 and , Then what would be the value of :

[A]38

[B]36

[C]16

[D]12

**36**

= 20 + 16 = 36

So option (B) is the right answer.

If , Then what would be the value of x-y:

[A]4

[B]-4

[C]0

[D]8

**0**

So option [C] is the right answer.

If , then what would be the value of xy:

[A]

[B]

[C]

[D]

Hence option [A] is the right answer.

If , Then is equals to :

[A]4

[B]6

[C]8

[D]10

**10**

Hence option (D) is the right answer.

If , Then (a+1) is equals to :

[A]a – 1

[B]

[C]

[D]

Such type of questions can be solve quickly by using alternativ method so by the alternative

Hence option [D] is correct.

If x is a real number, Then what would be the minimum value of :

[A]

[B]0

[C]1

[D]

Because for expression , a>0

Minimum value is :

Because here expression is :

Then Minimum value is :

Hence option [A] is the right answer.

If a * b = 2 (a + b), then 5 * 2 is equal to :

[A]20

[B]3

[C]10

[D]14

**14**

Given that

Hence option [D] is the rigth answer.

If a * b = 2a – 3b + ab, then 3 * 5 + 5 * 3 is equal to :

[A]28

[B]26

[C]22

[D]24

**22**

Give that a * b = 2a – 3b + ab

Therefore,

Hence option [C] is the rigth answer.

Two numbers x and y (x > y) are such that their sum is equal to three times their difference. Then value of will be :

[A]

[B]1

[C]

[D]

**1**

Hence option [C] is the rigth answer.

Find the value of

:

[A]

[B]

[C]

[D]

Given expression

Hence option [B] is the rigth answer.