Question

3. The common difference of an A.P. in which 018 - 214 = 32 is
a) - 8
b) 6
c) 8
d) – 6
4. Which of the following is not an A.P.?
a) 2,5/2, 3, 7/2, .....
b) a, 2a, 3a, 4a, .......
c) - 1.2.-3.2-5.2,- 7.2, ....... d) 2, 4, 8, 16, ....
5. The common difference of the A.P whose Sn = 3n2 + 7n is
a) 6 b)2
c) 1
d) 5
6. The 31st term of an AP whose first two terms are - 3 and 4 is
a) 210
b) 137
c) 207
d) 200
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Answer 1

Answer:

3.b

4.d

5.c

6.b

this is the answer for above questions