Question

please answer the 24th question !!

Answer 1

Answer:

d=2

Step-by-step explanation:

explained in the picture

Answer 2

Answer:

the sum of first four terms = the sum of next four terms

first term=5

according to question

first four terms

5,5+d,5+2d,5+3d

next four terms

5+4d,5+5d,5+6d,5+7d

Now,

5+5+d+5+2d+5+3d = (5+4d+5+5d+5+6d+5+7d)/2

20+6d = (20+22d)/2

20+6d = 10+11d

20-10 = 11d-6d

10 = 5d

d = 10/5

d=5