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Question 127
If (11) is subtracted from the square of a number, the answer so obtained is 430. What is the number?
Solution
Let the number be $$x$$
According to ques,
=> $$x^2-11 = 430$$
=> $$x^2=430+11=441$$
=> $$x=\sqrt{441}=21$$
=> Ans - (C)
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