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  • The 9th term of the A.P. – 15, – 11, – 7, ...., 49 is Option: 1 32 Option: 2 0 Option: 3 17 Option: 4 13

The 9th term of the A.P. – 15, – 11, – 7, ...., 49 is
Option: 1 32
Option: 2 0
Option: 3 17
Option: 4 13

Answers (1)

\\ a = -15, d = -11-(-15) = 4 , n =9\\ T_9 = a+(9-1)d \\ T_9 = -15 + (9-1) \times 4 \\ T_9 = -15 + 32 \\ T_9 = 17\\ $The 9th term of the A.P is 17.

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