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Question

Find the value of 11+13−42+13−(12)+33−43+12−(12)

A
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B
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C
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D
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E
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Solution

The correct option is B

Option (b)

Solving the expression using the conventional approach

After a good amount of calculation,

Given expression is equal to 47+117=157

Reverse Gear approach

Approximating, expression 1 = something >12
Similarly, Expression 2= something >32

Question = slightly greater than 12+32=2

Only option (b) satisfies this.


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