If - means - - means - - - means - - and - - means - - then the value of 7 - 8 - 5 - 6 - 4 is

The correct option is C 12 35 Given : 7 8 × 5 ÷ 6 + 4 On substituting the meanings of operators we will have : = 7+8÷ 5× 6 4 = #160;7 + ...

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Standard XII

Mathematics

Complex Numbers

If '-' mean...

Question

If $^{'} -^{'}$ means $^{'} +^{'},^{'} +^{'}$ means $^{'} -^{'},^{'}$ $\times$ ' means ' $\div$ ' and ' $\div$ ' means ' $\times$ ', then the value of $7 - 8 \times 5 \div 6 + 4$ is

3

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12

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12 \frac{3}{5}

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\frac{48}{5}

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Solution

The correct option is C $12 \frac{3}{5}$
Given : $7 - 8 \times 5 \div 6 + 4$
On substituting the meanings of operators we will have :
$= 7 + 8 \div 5 \times 6 - 4$
$= 7 + \frac{48}{5} - 4 = \frac{35 + 48 - 20}{5} = \frac{63}{5} = 12 \frac{3}{5}$
Hence, option 'C' is correct.

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If ′−′ means ′+′,′+′ means ′−′,′×' means '÷' and '÷' means '×', then the value of 7−8×5÷6+4 is

The correct option is C 1235Given : 7−8×5÷6+4On substituting the meanings of operators we will have :=7+8÷5×6−4=7+485−4=35+48−205=635=1235Hence, option 'C' is correct.

If $^{'} -^{'}$ means $^{'} +^{'},^{'} +^{'}$ means $^{'} -^{'},^{'}$ $\times$ ' means ' $\div$ ' and ' $\div$ ' means ' $\times$ ', then the value of $7 - 8 \times 5 \div 6 + 4$ is

The correct option is C $12 \frac{3}{5}$
Given : $7 - 8 \times 5 \div 6 + 4$
On substituting the meanings of operators we will have :
$= 7 + 8 \div 5 \times 6 - 4$
$= 7 + \frac{48}{5} - 4 = \frac{35 + 48 - 20}{5} = \frac{63}{5} = 12 \frac{3}{5}$
Hence, option 'C' is correct.