Advertisements
Advertisements
Question
Find 11th term of the A.P. 10.0, 10.5, 11.0, 11.5, ...
Solution
11th term of the A.P. 10.0, 10.5, 11.0, 11.5, ...
Here
First term (a) = 10.0
Common difference of the A.P. (d) = 10.5 - 10.0
= 0.5
Now, as we know,
`a_n = a + (n - 1)d`
So for 11 th term
`a_11 = a + (11 - 1)d`
`= 10.0 + (10)(0.5)`
= 10.0 - 5.0
= 15.0
Therefore the 11th term of the given A.P is `a_11 = 15.0`
APPEARS IN
RELATED QUESTIONS
Find the 60th term of the A.P. 8, 10, 12, ……., if it has a total of 60 terms and hence find the sum of its last 10 terms.
Find the 12th , 24th and nth term of the A.P. given by 9, 13, 17, 21, 25, ………
Determine the 10th term from the end of the A.P. 4, 9, 14, …….., 254
Write the first three terms in the sequences defined by the following
an = n2 + 1
Which of the following sequences are arithmetic progressions? For those which are arithmetic progressions, find out the common difference.
−225, −425, −625, −825, ...
Which of the following sequences are arithmetic progressions? For those which are arithmetic progressions, find out the common difference.
10, 10 + 25, 10 + 26, 10 + 27,...
Find the 12th term from the last term of the A.P – 2, – 4, – 6, … – 100
Find first four terms of an A.P., whose first term is 3 and common difference is 4.
If a, b, c, d, e are in A.P., then the value of a - 4b + 6c - 4d + e is ______.
Which of the following form an AP? Justify your answer.
`1/2, 1/3, 1/4, ...`
