Which One of The Following Becomes Correct? If

After interchanging + and -, 8 and 7, which one of the following becomes correct?

  1. 8 x 2 + 7- 6=9
  2. 7 x 8 + 6 -9 =25
  3. 8 – 7 + 3 x 5=35
  4. 6 + 8 x 2 -7 =0
Nitin Baudh Learner Asked on 22nd August 2015 in Reasoning Questions.
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1 Answer(s)

Answer:  (4) 6 + 8  x 2 -7 = 0

Explanation:-
Taking option (1),
8 x 2 + 7 – 6 = 9
After interchanging + and -, 8 and 7,
7 x 2 – 8 + 6
= 16 – 8  + 6
= 8 + 6 = 14
This option is wrong.

Taking option (2),
7 x 8 + 6 – 9 = 25
After interchange + and – , 8 and 7
8 x 7 – 6 + 9 = 56 – 6 + 9
= 50 + 9  = 59
This option is wrong .
Taking option (3),
8 – 7 + 3 x 5 = 35
After interchanging + and -, 8 and 7,
7 + 8 – 3 x 5
= 15 – 15 = 0
This option is wrong.

Taking option (4),
6 + 8 x 2 – 7 = 0
After interchanging + and -, 8 and 7,
6 – 7 x 2 + 8 = 6 – 14 + 8
= 14 – 14 = 0
This option is write.

Hence, the answer is (4) 6 + 8 x 2 – 7 = 0.

Anurag Mishra Professor Answered on 22nd August 2015.
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