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Arithmetic Progression

Question 5The...

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Question 5
The first four terms of an AP whose first term is – 2 and the common difference is – 2 are

A) – 2, 0, 2, 4
B) – 2, 4, –8, 16
C) – 2, – 4, – 6 , – 8
D) – 2, – 4, – 8, – 16

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Solution

Given, the first term, a = - 2 and the common difference, d = -2.
The first four terms of the AP will be a, a + d, a + 2d and a + 3d.
Then the first four terms of the AP are :
$a, a + d, a + 2 d, a + 3 d$
$= - 2, - 4, - 6, - 8, - 10$

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Similar questions

Q. Question 5
The first four terms of an AP whose first term is – 2 and the common difference is – 2 are

A) – 2, 0, 2, 4
B) – 2, 4, –8, 16
C) – 2, – 4, – 6 , – 8
D) – 2, – 4, – 8, – 16

Q. Question 33
The sum of the first n terms of an AP whose first term is 8 and the common difference is 20 is equal to the sum of first 2n terms of another AP whose first term is –30 and the common difference is 8. Find n.

Question 4 (i)
Which of the following are APs? If they form an A.P. find the common difference d and write three more terms.
(i) 2, 4, 8, 16, …

Q. a1,a2,a3,a4,a5 are the first five terms of an ap such that a1+a3+a5= -12 & a1a2a3=8 find the first term and common difference

Q. Find the common difference

d

and write three more terms if the following sequence is an AP:

2, 4, 8, 16, .

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Arithmetic Progression

Standard X Mathematics

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