Question

please tell me correct answer .

10th standard chapter 1.

Arithmetic progression.

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Answer 1

Answer:

1. 28 ,2.2

Step-by-step explanation:

a=7, d=3, n=8

an= a+(n-1)d

=7+(8-1)3

= 7+7×3

7+21=8

2.a=-18, n=10, an=0, d=?

an=a+(n-d)d

0=-18+(10-1)d

0=-18+9d

9d=18

d=18/9

d= 2...

do same like that .. remaining sums also....

Answer 2

Answer:

Sorry for late reply yaar btw

Nice joke.....

Allah Hafiz I going offline because mai ra chemistry paper solve kar na hai...