The First term of A. P. Series is 2 and the common difference is1/2,Find the 20th term
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Hi ,
First term ( a ) = 2 ,
Common difference ( d ) = 1/2
We know that
nth term in A.P = an = a + ( n - 1 )d
Here n = 20
a20 = a + ( 20 - 1 ) d
= a + 19 d
= 2 + 19 × ( 1/2 )
= 2 + 9.5
= 11.5
I hope this helps you.
:)
First term ( a ) = 2 ,
Common difference ( d ) = 1/2
We know that
nth term in A.P = an = a + ( n - 1 )d
Here n = 20
a20 = a + ( 20 - 1 ) d
= a + 19 d
= 2 + 19 × ( 1/2 )
= 2 + 9.5
= 11.5
I hope this helps you.
:)
Gullu111:
I m really dull at Mathematics ,Can you help me more, would you mind if I ask you more question?
sure ,
So How did you get 20 out of an n
an means nth term , a20 means 20 th term
compare an , a20 , n = 20
is it clear
oh you mean to say that that the value of n is 20 ,am I right
it's clear to me sir
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