If the AM of two numbers is greater than GM of the numbers by 2 and the ratio of the numbers is 4:1, then the numbers are
A
4,1
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B
12,3
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C
16,4
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D
None of these
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Solution
The correct option is C16,4 Let required numbers are a and b. Now, AM =a+b2 and GM =√ab According to the question, AM = GM +2 ⇒a+b2=√ab+2 ...(i) and ab=41 ⇒a=4b ...(ii) On solving equations (i) and (ii), we get a=16,b=4