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The 10th common termbetween the A.P.s 3,7,11,15, and 1,6,11,16,.. is`191`b. `193`c. `211`d. none of these

Answer» Correct Answer - 191
The first common term =11
Common differnece of new AP = LCM (4,5) =20
So, the new AP is 11,31,51,…..,
Its 10th term= ` (11 +9 xx20) =191`


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