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Arithmetic Progressions

Question 2:

Choose the correct choice in the following and justify

I. 30th term of the A.P: 10, 7, 4, …, is

A. 97 B. 77 C. − 77 D. − 87

II 11th term of the A.P. is

A. 28 B. 22 C. − 38 D.

Answer:

I. Given that

A.P. 10, 7, 4, …

First term, a = 10

Common difference, d = a2a1 = 7 − 10

= −3

We know that, an = a + (n

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