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Simplfy
b - [b -(a+b) - {b - (b - a+b)} + 2a]

  • a
  • 2a
  • 4a
  • 0

Answer: Option D

Explanation:

b-[b-(a+b)-{b-(b-a+b)}+2a]
=b-[b-a-b-{b-(2b-a)}+2a]
=b-[-a-{b-2b+a}+2a]
=b-[-a-{-b+a}+2a]
=b-[-a+b-a+2a]
=b-[-2a+b+2a]
=b-b
=0

Similar Questions :

1. 7500 + (1250 / 50)

  • 7500
  • 7525
  • 7550
  • 8000

Answer: Option B

Explanation:

As per BODMAS rule first we will solve the terms in the bracket then other.
= 7500 + (25) = 7525

2. Simplify
\begin{aligned} 1+\frac{1}{2}+\frac{1}{4}+\frac{1}{7}+\frac{1}{14}+\frac{1}{28} = ? \end{aligned}

  • 2
  • 2.3
  • 2.6
  • 5

Answer: Option A

Explanation:

By taking LCM we get
=\begin{aligned} \frac{28+14+7+4+2+1}{28}
= \frac{56}{28} = 2\end{aligned}

3. Along a yard 225 metres long, 26 trees are palnted at equal distances, one tree being at each end of the yard. What is the distance between two consecutive trees

  • 8
  • 9
  • 10
  • 11

Answer: Option B

Explanation:

26 trees have 25 gaps between them,
Required distance (225/25) = 10

4. a * b = 2a - 3b + ab, then 3*5 + 5*3 = ?

  • 20
  • 21
  • 22
  • 23

Answer: Option C

Explanation:

= 2(3)-3(5)+(3*5) + 2(5)-3(3)+(5*3)
= 6-15+15+10-9+15 = 31-9 = 22

5. 5004 / 139 - 6

  • 25
  • 27
  • 29
  • 30

Answer: Option D

Read more from - Simplification Questions Answers
Post a comment

  • Vishal 10 years ago

    b-[b-(a+b)-{b-(b-a+b)}+2a]
    =b-[b-a-b-{b-(2b-a)}+2a]
    =b-[-a-{b-2b+a}+2a]
    =b-[-a-{-b+a}+2a]
    =b-[-a+b-a+2a]
    =b-[-2a+b+2a]
    =b-b
    =0

  • arun 11 years ago

    when sq bracket will be open, then +2a will be convert into -2a. am i right?

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