Advertisements
Advertisements
Question
Find the first term and common difference for the A.P.
0.6, 0.9, 1.2,1.5,...
Advertisements
Solution
0.6, 0.9, 1.2,1.5,...
First term = 0.6
Common difference = Second term – First term
= 0.9 – 0.6
= 0.3
APPEARS IN
RELATED QUESTIONS
Find the sum of the following APs:
2, 7, 12, ..., to 10 terms.
Find the sum given below:
–5 + (–8) + (–11) + ... + (–230)
Find the sum of first 15 multiples of 8.
Find the sum 25 + 28 + 31 + ….. + 100
Find the sum of 28 terms of an A.P. whose nth term is 8n – 5.
How many terms of the AP `20, 19 1/3 , 18 2/3, ...` must be taken so that their sum is 300? Explain the double answer.
Write an A.P. whose first term is a and the common difference is d in the following.
a = 10, d = 5
If in an A.P. Sn = n2p and Sm = m2p, where Sr denotes the sum of r terms of the A.P., then Sp is equal to
If Sr denotes the sum of the first r terms of an A.P. Then , S3n: (S2n − Sn) is
The sum of first 20 odd natural numbers is
Let the four terms of the AP be a − 3d, a − d, a + d and a + 3d. find A.P.
An article can be bought by paying Rs. 28,000 at once or by making 12 monthly installments. If the first installment paid is Rs. 3,000 and every other installment is Rs. 100 less than the previous one, find:
- amount of installments paid in the 9th month.
- total amount paid in the installment scheme.
Q.6
Q.7
Find the sum of numbers between 1 to 140, divisible by 4.
The sum of first ten natural number is ______.
The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum of the first ten terms of this AP is 235, find the sum of its first twenty terms.
How many terms of the AP: –15, –13, –11,... are needed to make the sum –55? Explain the reason for double answer.
Find the value of a25 – a15 for the AP: 6, 9, 12, 15, ………..
Find the sum of first 'n' even natural numbers.
