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SSC CGL Model Paper 14

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Question : 14 of 100

Marks: +1, -0

If "-" means “added to”, “+” means “divided by” “+” means “multiplied by”, “×” means “subtracted from”, then 13 + 12 × 9 ÷ 3 - 6 =?

$-\frac{117}{11}$
$\frac{117}{11}$
$-\frac{237}{12}$
$-\frac{239}{12}$

Solution:

Concept:

Replace each symbol with its new meaning, then simplify using BODMAS.

Explanation:

Given expression:

13 + 12 \times 9 \div 3 - 6

.

The symbol meanings are:

+ \to \div

,

\times \to -

,

\div \to \times

,

- \to +

.

After replacing the symbols:

13 \div 12 - 9 \times 3 + 6

.

Apply BODMAS:

= \frac{13}{12} - 27 + 6

.

= \frac{13}{12} - 21

.

= \frac{13 - 252}{12}

.

= -\frac{239}{12}

.

Answer:

-\frac{239}{12}

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