1,8,15,22,29,36,… is

1,8,15,22,29,36,… is

G.P

A.P

Geometric series

arithmetic series

Answer : B

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1) 1,8,15,22,29,36,… is

G.P

2) Common difference of sequence 5,8,11,14,… is

3

-3

0

1

3) If the roots of the equation (b - c)x2 + (c - a)x + (a-b) = 0 are equal, then

2b = a + c

a = b = c

b2 = ac

none of these

4) The sum of 5 numbers in AP is 30 and sum of their squares is 220. Which of the following is the third term ?

5

6

7

8

5) An AP consist of 31 terms if its 16th term is m, then sum of all the terms of this AP is

16 m

47 m

31 m

52 m