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SSC CGL Model Paper 20

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Question : 14 of 100

Marks: +1, -0

In a certain code language, '+’ represents ‘×','-' represents '+', ‘×' represents '÷' and '÷' represents '-'.

What is the answer to the following question?

42 \times 7 \div 7 + 9 - 62 = ?

5
87
22
2

Solution:

Concept:

Replace each coded symbol with its actual operation and solve using BODMAS.

Explanation:

Given replacements:

+ \rightarrow \times

,

− \rightarrow +

,

\times \rightarrow \div

,

\div \rightarrow −

.

Original expression:

42 \times 7 \div 7 + 9 - 62

.

After replacement:

42 \div 7 - 7 \times 9 + 62

.

Solve division and multiplication first:

42 \div 7 = 6

and

7 \times 9 = 63

.

The expression becomes:

6 - 63 + 62

.

Simplify:

6 - 63 = -57

, then

-57 + 62 = 5

.

Answer:

The final value is

5

, so the correct option is A.

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