Advertisements
Advertisements
प्रश्न
The nth term of an AP is (3n +5 ). Find its common difference.
उत्तर
We have
Tn = (3n +5)
Common difference = T2- T1
`T_1 = 3 xx 1 +5=8`
`T_2 = 3 xx 2 + 5=11`
d= 11-8-3
Hence, the common difference is 3.
APPEARS IN
संबंधित प्रश्न
Choose the correct choice in the following and justify:
30th term of the AP: 10, 7, 4, ..., is ______.
The 17th term of an AP exceeds its 10th term by 7. Find the common difference.
Write the first five terms of the following sequences whose nth terms are:
an = n2 − n + 1
Show that each of the progressions given below is an AP. Find the first term, common difference and next term of each.
(iv) 2, 8, 18, 32,..........
Find:
the 9th term of the AP `3/4 , 5/4 , 7/4 , 9/4 ,.........`
Find the nth term of the following Aps:
(i) 5, 11, 17, 23 …
Find the number of terms in the A.P.: 18, `15 1/2, 13, ...., -47.`
The 6th term from the end of the AP: 5, 2, -1, -4, …., -31, is ______.
In an AP, if d = –4, n = 7, an = 4, then a is ______.
The nth term of an A.P. 5, 2, -1, -4, -7 … is ______.