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What value will come in place of the question mark (?) in the following questions.

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What value will come in place of the question mark (?) in the following questions.


$$(562.5 \times 6)^{6}\div(135 \div 9)^{10}$$ $$\div(37.5 \times 6)^{7}=(3.75 \times 4)^{?-6}$$
1). 0
2). 2
3). 3
4). 4


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1 answers

2 vote
Answered by on | Votes 2 |
Solution

Expression : $(562.5 \times 6)^{6}\div(135 \div 9)^{10}$ $\div(37.5 \times 6)^{7}=(3.75 \times 4)^{?-6}$

=> $(3375)^6 \div (15)^{10} \div (225)^7 = (15)^{x - 6}$

=> $((15)^3)^6 \div (15)^{10} \div ((15)^2)^7 = (15)^{x - 6}$

=> $(15)^{18} \times \frac{1}{(15)^{10}} \times \frac{1}{(15)^{14}} = (15)^{x - 6}$

=> $(15)^{18 - 10 - 14} = (15)^{x - 6}$

=> $(15)^{-6} = (15)^{x - 6}$

Comparing both sides, we get :

=> $x - 6 = -6$

=> $x = 6 - 6 = 0$

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