Plz answer this que
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T2-T1=a so A+D-A=a , D=a
T3-T2=b
on adding T3-T1=a+b
A+2D-A=a+b
2D=(a+b)
2a=a+b
a=b
T3-T2=b
on adding T3-T1=a+b
A+2D-A=a+b
2D=(a+b)
2a=a+b
a=b
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