If the nth term of an arithmetic progres-
sion a = 24 - 3n, then it's 2nd term is
(a) 18 (b) 15 (c) 0 (d) 2
Answers
Answered by
2
Answer:
18
Explanation:
plug in 2 in place of n
a = 24-3(2)
a = 24 -6
a = 18
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Answered by
7
Answer:
a_2 = 18.
b. option is correct.
Explanation:
Given :
n term of A.P.
= > a_n = 24 - 3 n
We are asked to find second terms :
Putting n = 2 we get :
= > a_2 = 24 - 6
= > a_2 = 18 .
Therefore , second term of A.P. is 18.
Some important A.P. formula are as :
t_n = a + ( n - 1 ) d
d = t_2 - t_1
S_n = n / 2 ( 2 a + ( n - 1 ) d )
S_n = n / 2 ( a + l )
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