Question

In an arithmetic progression series,
find the term of -7, -2, 3, 8. ....​

Answer 1

Step-by-step explanation:

d=-2+7=5

a=-7

t1=-7 t2=-2 t3=3 t4 =8

Answer 2

8 ka batata hu a=-7 d=a2-a1

d=-2-(-7)

d=-2+7

d=5.

l=8.

so, an=l=a+(n-1)d

an=-7+(n-1)5

an=-7+5n-5

but an=l and l=8

so, 8=-7+5n-5

8=-12+5n

20=5n

n=20/5

n=4.

for general term ans is an=-12+5n..