How to use substituting these values into the formula.
Simplify the expression by performing the arithmetic operations.
the expression by performing the arithmetic operations and get the value of the nth term of the AP.
10th Maths Page No:106, Questions No:2 Part (i) Chapter 5 EXERCISE 5.2, Session 2022-2023.
Choose the correct choice in the following and justify : 30th term of the AP: 10, 7, 4, . . . , is
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Here, a = – 10, d = 7 – 10 = – 3 and n = 30.
Therefore, putting the values in a_n = a + (n -1)d, we get
a_30 = 10 +(30 -1) (- 3)
⇒ a_30 = 10 – 87 = – 77
Hence, the option (C) is correct.