9th term of an Ap is 18, if common difference is 2 then find a and Ap ?
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okay 9th term is by an= a(n-1)d
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Hey !!
Given,
9th term of an Ap is 18
a + 8d = 18
Common difference d = 2
a + 8( 2 ) = 18
a + 16 = 18
a = 18 - 16
a = 2
a + d = 2 + 2 = 4
a + 2d = 2 + 4 = 6
Therefore Ap = 2,4,6,......18......
Given,
9th term of an Ap is 18
a + 8d = 18
Common difference d = 2
a + 8( 2 ) = 18
a + 16 = 18
a = 18 - 16
a = 2
a + d = 2 + 2 = 4
a + 2d = 2 + 4 = 6
Therefore Ap = 2,4,6,......18......
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