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Question

Find the mode of data 1,2,5,3,2,3,0,5,2.

A
3
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B
1
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C
5
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D
None of these
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Solution

The correct option is A 3
dydx=y22yx1dyy22y=dx(x1)dyy(y2)=dxx1dyy(y2)=log(x1)+cLet1y(y2)=Ay+B(y2)1=Ay2A+By1+2AA=12and(A+B)y=0,A+B=0(i)PutA=12inequation(i)12+B=0,B=12Aydy+B(y2)dy=log(x1)+c12dyy+121(y2)=log(x1+c12logy+12log(y2)=log(x2)+logc12[log(y2y)]=log(x1)clogy2y=log(x1)c(y2)y=(x1)cyy2y=(x1)2c21(x1)2c2=2yy=21(x1)2c2Ans.

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