Common Difference
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If 2x, x + 10, 3x + 2 are in AP. Find the value of x.
In the arithmetic progression given below, find the common difference.
1, a, b, c, 9
0
3
1
2
Which of the following list of numbers forms an AP?
(i) 4, 4 + √3 , 4 + 2√3, 4 + 3√3, 4 + 4√3
(ii) 0.3, 0.33, 0.333, 0.3333, 0.33333
(iii) 35, 65 , 95 , 125 , 3
(iv) -15 , -15 , -15 , -15 , -15
Only (i) and (ii)
Only (iii) and (iv)
Only (ii) and (iii)
Only (i), (iii) and (iv)
Which of the following series forms an AP?
(i)a–2d, a–d, a, a+d, a+2d
(ii)a, a+d, a+2d, a+3d, a+4d
(iii)a–3d, a–d, a+d, a+3d
(i) and (ii)
(i) and (iii)
(i), (ii) and (iii)
(ii) and (iii)
If the first term of an AP is 4 and the common difference is -4, find the second term.
0
8
-16
-4
- an AP with common difference -7.
- not an AP.
- an AP with common difference 7.
- an AP with common difference 3.
The sides of a right triangle are in an AP. The area and the perimeter of the triangle are numerically equal. Find its perimeter.
24 units
34 units
44 units
Can’t say, the common difference should be given
The sum of 3 consecutive terms of an A.P = 33 and the sum of their squares is equal to 371. Then the terms are 9, 11, 13 or 13, 11, 9.
True
False