The correct option is B ÷ and + On interchanging #160; ÷ and + , we get :Given expression : #160; =77÷ 7× 2+4 7 =11× 2+4 7=19 ...

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Standard XII

Mathematics

Empty Set

77+7× 2÷ 4-7=...

Question

$77 + 7 \times 2 \div 4 - 7 = 19$

\div a n d -

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\div a n d +

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+ a n d \times

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+ a n d -

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Solution

The correct option is B $\div a n d +$
On interchanging $\div a n d +$ , we get :
Given expression : $= 77 \div 7 \times 2 + 4 - 7$
$= 11 \times 2 + 4 - 7 = 19$

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Similar questions

Q. 77 + 7

\times

\div

4 - 7 = 19

Question 109 (ii)

Observe the following patterns and fill in the blanks to make the statements true:
$7 \times 4 = 28$
$7 \times 3 =$ ___ $= 28 - 7$
$7 \times 2 =$ ___=___ $= - 7$
$7 \times 1 = 7 =$ ___ $- 7$
$7 \times 0 =$ ___ =___-___
$7 \times (- 1) = - 7 =$ ___-___
$7 \times (- 2) =$ ___=___-___
$7 \times (- 3)$ ___=___-___

Q. If a and b are rational numbers and

\frac{\sqrt{11} - \sqrt{7}}{\sqrt{11} + \sqrt{7}} = a - b \sqrt{77},

find

a - b

Find the coordinates of the intersection of the lines $2 x - 3 y + 1 = 0$ and $2 x + 4 y + 5 = 0$ .

List four rational numbers between $\frac{5}{7}$ and $\frac{7}{8} .$

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77+7×2÷4−7=19

The correct option is B ÷and+On interchanging ÷and+, we get :Given expression : =77÷7×2+4−7=11×2+4−7=19

$77 + 7 \times 2 \div 4 - 7 = 19$

The correct option is B $\div a n d +$
On interchanging $\div a n d +$ , we get :
Given expression : $= 77 \div 7 \times 2 + 4 - 7$
$= 11 \times 2 + 4 - 7 = 19$