SSC CHSL Model Paper 19

Question : 23 of 99

Marks: +1, -0

Study the following statements and answer the questions accordingly.
'+' stands for division
'÷’ stands for multiplication
‘×’ stands for subtraction
and '-' stands for addition .
Which one of the following is correct?

$3 0÷ 4 0 + 8 - 7 0 × 4 0 = 180$
$30 + 40 ÷ 8× 70 - 40 = 340$
$30 - 40× 8÷ 70 + 40 = 180$
$30 + 40 + 8 × 70 - 40 = 340$

Validate

Solution:

+ ⇒ ÷	÷ ⇒ ×
× ⇒ -	- ⇒ +

Option (1)

3 0÷ 4 0 + 8 - 7 0 × 4 0 = 180

⇒

30 ×40 ÷ 8 + 7 0 - 40 = 180

⇒

3 0× 5 + 7 0 - 4 0 = 180

⇒

150 + 7 0 - 4 0 = 180

Option (2)

30 + 40 ÷ 8× 70 - 40 = 340

⇒

30 ÷ 40 × 8 - 70 + 40 = 340

⇒

6 - 70 + 40 = 340

⇒

46 - 70 ≠34 0

Option (3)

30 - 40× 8÷ 70 + 40 = 180

⇒

30 + 40 - 8 × 70 ÷ 40 = 180

⇒

30 + 40 - 14 + 180

Option (4)

30 + 40 + 8 × 70 - 40 = 340

⇒

30÷ 40÷ 8 - 70 + 40 = 340

⇒

3/48-70+40≠340

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