Advertisements
Advertisements
प्रश्न
Choose the correct alternative answer for the following question .
First four terms of an A.P. are ....., whose first term is –2 and common difference is –2.
पर्याय
-2,0,2,4
-2,4 ,-8,16
-2, -4,-6,-8
-2, -4 ,-8,-16
Advertisements
उत्तर
It is given that,
First term (a) = –2
Common difference (d) = –2
Second term = a + d = –2 + (–2) = –4
Third term = a + 2d = –2 + 2(–2) = –6
Fourth term = a + 3d = –2 + 3(–2) = –8
Thus, first four terms of the A.P. are –2, –4, –6, –8
APPEARS IN
संबंधित प्रश्न
Find the sum of first 30 terms of an A.P. whose second term is 2 and seventh term is 22
Find the sum given below:
–5 + (–8) + (–11) + ... + (–230)
A contract on a construction job specifies a penalty for delay of completion beyond a certain date as follows: Rs. 200 for the first day, Rs. 250 for the second day, Rs. 300 for the third day, etc., the penalty for each succeeding day being Rs. 50 more than for the preceding day. How much money does the contractor have to pay as a penalty if he has delayed the work by 30 days?
Find the sum of the following arithmetic progressions:
`(x - y)/(x + y), (3x - 2y)/(x + y), (5x - 3y)/(x + y),...` to n terms
Determine the A.P. Whose 3rd term is 16 and the 7th term exceeds the 5th term by 12.
Which term of AP 72, 68, 64, 60, ... is 0?
Find the 8th term from the end of the AP 7, 10, 13, ..., 184.
If the pth term of an AP is q and its qth term is p then show that its (p + q)th term is zero.
A sum of ₹ 2800 is to be used to award four prizes. If each prize after the first is ₹ 200 less than the preceding prize, find the value of each of the prizes.
In an A.P. the 10th term is 46 sum of the 5th and 7th term is 52. Find the A.P.
The sum of third and seventh term of an A. P. is 6 and their product is 8. Find the first term and the common difference of the A. P.
Find the sum: 1 + 3 + 5 + 7 + ... + 199 .
If the sum of n terms of an A.P. is 2n2 + 5n, then its nth term is
If the first, second and last term of an A.P. are a, b and 2a respectively, its sum is
Find the sum of first 10 terms of the A.P.
4 + 6 + 8 + .............
Obtain the sum of the first 56 terms of an A.P. whose 18th and 39th terms are 52 and 148 respectively.
How many terms of the A.P. 24, 21, 18, … must be taken so that the sum is 78? Explain the double answer.
The sum of the first 15 multiples of 8 is ______.
The sum of the first 2n terms of the AP: 2, 5, 8, …. is equal to sum of the first n terms of the AP: 57, 59, 61, … then n is equal to ______.
The sum of all two digit numbers is ______.
