Advertisements
Advertisements
Question
If for an A.P. the first term is 2 and the common difference is 3, then find first three-term of A.P.
Solution
a =2, d =3
t1 = a = 2
t2 = a + d = 2 + 3 = 5
t3 = a + 2d = 2 +2(3) = 2 + 6 = 8
APPEARS IN
RELATED QUESTIONS
An AP 8, 10, 12, … has 60 terms. Find its last term. Hence, find the sum of its last 10 terms.
The sum of fist m terms of an AP is ( 4m2 - m). If its nth term is 107, find the value of n. Also, Find the 21st term of this AP.
In a school, students decided to plant trees in and around the school to reduce air pollution. It was decided that the number of trees that each section of each class will plant will be double of the class in which they are studying. If there are 1 to 12 classes in the school and each class has two section, find how many trees were planted by student. Which value is shown in the question?
Find the number of terms of the AP − 12, −9, −6, ….., 12. If 1 is added to each term of this AP, then find the sum of all terms of the AP thus obtained ?
Find the sum of all three digit natural numbers, which are multiples of 7 ?
Is the following sequences are A.P.? If is A.P. find the common difference.
0.3, 0.33, 0.333,...
Is the following sequences are A.P.? If is A.P. find the common difference.
0, –4, –8, –12,...
Is the following sequences are A.P.? If is A.P. find the common difference.
Which of the following sequences are A.P.? If they are A.P. find the common difference.
`3, 3 + sqrt2, 3 + 2sqrt2, 3 + 3sqrt2, ...`
On the world environment day tree plantation programme was arranged on a land which is triangular in shape. Trees are planted such that in the first row there is one tree, in the second row there are two trees, in the third row three trees and so on. Find the total number of trees in the 25 rows.
Observe the adjacent Venn diagram and write the complement of A.
The estimated tax on the income of Shreemati Hinduja is Rs. 8000. How much education cess has she to pay at 3% ?
Write a trinomial of degree 7.
Write the lower and the uppper class limit of 35 to 40
Yogesh requires 3 days more than Vivek to do a work completely. If both
of them work together, the work can be completed in 2 days. Find the
number of days required for each of them to do the work completely.
First term and common difference of an A.P. are 12 and 4 respectively. If tn = 96 find n.
Find the 19th term of the A.P. 7, 13, 19, 25, ............ .
Find the first four terms in A.P. When a = 10 and d = 3.
Find the value of the determinate:
`|(4,-2),(3,1)|`
