A) 3
B) 4
C) 5
D) 7
Correct Answer: B
Solution :
Let the numbers are x and y. According to question, \[x+y=42\] ?(i) and \[xy=437\] ?(ii) We know that \[{{(x-y)}^{2}}={{(x+y)}^{2}}-4xy\] \[={{(42)}^{2}}-437\times 4\] \[=1764-1748=16\] \[\Rightarrow \] \[x-y=4\]You need to login to perform this action.
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