Find the 7th term of the A.P. 8, 5, 2, –1, –4,…..

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10 Mar 2021 AP

Find the 7th term of the A.P. 8, 5, 2, –1, –4,…..

OPtion

1) 10
2) 8
3) -8
4) -9
5) -12
6) 12
7) -10
8) 9
9) 6
10) None of the above

Solution

Here a = 8, d = 5 – 8 = –3
Now t7 = 8 + ( 7 – 1 ) d
= 8 + ( 7 – 1 ) (– 3 )
= 8 + 6 (– 3 )
= 8 – 18
= – 10

Correct Option: 7 Best Solution (1)