Question

Plz answer the 9th question which is in picture
Plz answer me fast

Answer 1

Answer:

The series as follows

12,16, .........96

a=12 , d= 4. , tn=96

tn=a+(n-1)×d

96=12+(n-1)4

84=(n-1)4

21=n-1

n=22

Answer 2

I'll try to answer.......

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