a=100, d=-7,Given a and d for the given AP, find the given A.P.
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Given first term in A.P
a = 100 ,
Common difference (d )= -7
We know that ,
nth term in A.P ( an ) = a + ( n - 1 )d
i ) a2 = a + ( 2 - 1 )d
= a + d
= 100 - 7
= 83
ii ) a3 = a2 + d
= 83 - 7
= 76
iii ) a4 = a3 + d
= 76 - 7
= 79
Therefore ,
Required A.P is
100 , 93 , 86 , 79 ,....
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