Question

Please solve this problem​

Answer 1

Answer:

option no (a) is correct.

Step-by-step explanation:

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Answer 2

Answer:

(d) 7

Step-by-step explanation:

here,

for the first AP, the first term (a) = -1 ... (1)

and for the second AP,the first term (a') = -8 ... (2)

by question,we know that ,

common difference (d) of the two Aps are same... (3)

Again,

the fourth term of the first AP = a+ 3d...(4)

and the fourth term of the second AP = a' +3 d..(5)

Then . from (3) , we know that,

a+3d =a' + 3 d

ie. -1+3d = -8 +3d( from (1) and (2))

ie. -1+8=0

ie. 7