Question 45

Select the combination of mathematical signs that when sequentially placed in the blanks of the given equation will balance the equation.
(157_13)_36_1_5

Solution

Given that (157_13)_36_1_5

we check Option (A)$$+ \div - = $$ 

the above sign put in the given equestion 

$$(157+13)\div36-1=5 $$

From LHS $$(157+13)\div36-1 $$

$$\Rightarrow 170 \div 36 -1$$

$$ \Rightarrow 4.72-1 $$

$$\Rightarrow 3.72 $$  it is not satisfied RHS 

We check Option (B) $$- \div + = $$

we put above Sign in the expression

$$ (157-13\div 36+1= 5$$

From LHS $$ (157-13\div 36+1$$

$$\Rightarrow 144 \div36 +1$$

$$\Rightarrow 4 +1 $$

$$\Rightarrow 5 $$ RHS it is satisfied .

therefore Option (B) $$-\div+=$$ Ans


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