(ii) Complete the following activity to find 30th term of the A.P.
3, 8, 13, 18, ... .
Here, a = 3, d = 0 30th term means tzo = ?
tn
=
... (Formula)
.. t30 = 3 +
. (Substituting the values)
.. 130 = 3 + 29 x 5
... t30
Answers
Answered by
29
Answer:
A.P. = 3, 8, 13, 18..
Here,
a = 3
d = a² - a¹ = 8 - 3 = 5
A₃₀ = ?
Using AP formula,
An = a + (n - 1) d
A₃₀ = 3 + (30 - 1) 5
A₃₀ = 3 + (29) 5
A₃₀ = 3 + 145
A₃₀ = 148
Hence, the 30th term of AP 3, 8, 13, 18.. is 148.
Answered by
8
The 30th term of given AP 3, 8, 13, 18,... is 148.
Given:
- AP 3, 8, 13, 18,...
To find:
- Find the 30th term.
Solution:
Formula to be used:
General term of A.P.:
here a: first term
d: Common difference
n: no. of terms
Step 1:
Write the terms used in the formula.
a= 3
d= 8-3= 5
n= 30
Step 2:
Put the values in the formula.
or
or
or
Thus,
30th term of A.P. is 148.
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