Advertisements
Advertisements
प्रश्न
Find the 19th term of the following A.P.:
7, 13, 19, 25, ...
Advertisements
उत्तर
The given sequence is 7, 13, 19, 25, ....
Here,
First term = a = t1 = 7, t2 = 13, t3 = 19, t4 = 25, ....
Common difference = d = t2 − t1
= 13 – 7
= 6
To find the 19th term, we have to use the formula, i.e.,
tn = a + (n − 1)d
∴ t19 = 7 + (19 − 1) × 6 ...(On substituting value)
= 7 + 18 × 6
= 7 + 108
= 115
Hence, the 19th term of the progression is 115.
APPEARS IN
संबंधित प्रश्न
Find the sum of the following arithmetic series:
34 + 32 + 30 + ... + 10
Find the sum of the following arithmetic series:
(–5) + (–8) + (–11) + ... + (–230)
Decide whether the following sequence is an A.P., if so find the 20th term of the progression:
–12, –5, 2, 9, 16, 23, 30, ..............
Find the 27th term of the following A.P.
9, 4, –1, –6, –11,...
Select the correct alternative and write it.
What is the sum of first n natural numbers ?
How many multiples of 4 lie between 10 and 205?
Find tn if a = 20 and d = 3.
Find t5 if a = 3 and d = –3.
Decide whether the given sequence 24, 17, 10, 3,...... is an A.P.? If yes find its common term (tn).
12, 16, 20, 24,...... Find 25th term of this A.P.
If p - 1, p + 3, 3p - 1 are in AP, then p is equal to ______.
In an A.P. if the sum of third and seventh term is zero. Find its 5th term.
Write the next two terms of the A.P.: `sqrt(27), sqrt(48), sqrt(75)`......
In the nth term formula \( t_{n} = a + (n - 1)d \), what does the symbol \( d \) represent?
According to the pattern of an A.P., how is the term at position \( n \) described in words?
In the formula \( t_{10} = a + 9d = 25 \), which value is used in place of \( (n - 1) \)?
From which month onwards does Meera's salary exceed Tara's salary?
