SSC CHSL 6 Mar 2018 Shift 3 Paper

Section: General Intelligence

Question : 39 of 100

Marks: +1, -0

The following equation is incorrect. Which two signs should be interchanged to correct the equation?
20 ÷ 14 + 5 x 20 - 2 = 56

+ and x
÷ and -
+ and ÷
- and +

Validate

Solution:

Expression : 20 ÷ 14 + 5 x 20 - 2 = 56
(A) : + and x
≡ 20 ÷ 14 × 5 + 20 − 2 = 56
L.H.S. = 7.14 + 18 = 25.14 ≠ R.H.S.
(B) : ÷ and -
≡ 20 − 14 + 5 × 20 ÷ 2 = 56
L.H.S. =

6 +100/2 =56

= R.H.S.

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