Find the last term of an ap series 3,6,9,12,15,18
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the last term of this ap series 3 , 6 , 9 , 12 , 15 , 18 is
last term = a + ( n - 1 ) d
= 3 + ( n - 1 )3
last term = a + ( n - 1 ) d
= 3 + ( n - 1 )3
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the answer is 21
in ap series the common difference(CD) between two terms is equal or same
so if you take any two terms
let's take 6 nd 3 the CD is 3 similarly in 9 and 6 and so on
there fore, if you want the next term add 3 to it
I.e., 18 +3 =21
in ap series the common difference(CD) between two terms is equal or same
so if you take any two terms
let's take 6 nd 3 the CD is 3 similarly in 9 and 6 and so on
there fore, if you want the next term add 3 to it
I.e., 18 +3 =21
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