Advertisements
Advertisements
प्रश्न
Find first term of the sequence tn = 3n − 2.
उत्तर
Given: tn = 3n − 2
Put n = 1
∴ t1 = 3(1) − 2
∴ t1 = 3 − 2
∴ t1 = 1
∴ The first term of the sequence is 1.
APPEARS IN
संबंधित प्रश्न
Find the first two terms of the following sequence:
tn = n +2 .
State whether the following sequence is an A.P. or not.
1,3,6,10,......
Choose the correct alternative answer for the following sub question.
What is the common difference of the sequence 0, – 4, – 8, – 12?
tn = 2n − 5 in a sequence, find its first two terms
Find first term of the sequence tn = 2n + 1
Find two terms of the sequence tn = 3n – 2
Decide whether the following sequence is an A.P. or not.
3, 5, 7, 9, 11 ........
Kalpana saves some amount every month. In the first three months, she saves ₹ 100, ₹ 150, and ₹ 200 respectively. In how many months will she save ₹ 1200?
Activity :- Kalpana’s monthly saving is ₹ 100, ₹ 150, ₹ 200, ......, ₹ 1200
Here, d = 50. Therefore this sequence is an A.P.
a = 100, d = 50, tn = `square`, n = ?
tn = a + (n – 1) `square`
`square` = 100 + (n – 1) × 50
`square/50` = n – 1
n = `square`
Therefore, she saves ₹ 1200 in `square` months.
Check whether 422 is in the sequence 10, 13, 16, 19, 22, ....
Find two consecutive positive even integers such that their product is 1520.
