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Question

You take $$5$$ less than thrice a number and add $$7$$. The result is $$14$$. The number is


A
5
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B
4
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C
6
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D
2
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Solution

The correct option is D $$4$$
Let the number be $$x$$. 
Then according to the given condition,
 $$(3x-5)+7=14$$
$$\Rightarrow 3x+2=14$$
$$\Rightarrow \displaystyle 3x=12$$
$$\Rightarrow x=\dfrac{12}{3}$$
$$\Rightarrow x=4$$
Hence, the required number is $$4$$.

Mathematics

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