Find the 18th term of the A.P. 7, 18, 19, 25,
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GENERAL FORM - an = a+ (n-1) d
a = 7
n= 18
d = 11
a18 = ?
------->a 18 = 7 + (18 - 1 ) ( 11)
-------->a18 =7 + (17)11
-------->a18 = 7 + 187
--------->a18 = 194
hope this helps dear....
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this is the right answer
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