Question

Find the 20th term of the following A.P. 3, 1, -1, -3, -5,...

Answer 1

Answer:

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Answer 2

Answer:

equal to a + (20-1)d = a + 19*d.

Step-by-step explanation:

The value of the 20th term of an arithmatic progression (i.e. a20) will be equal to a + (20-1)d = a + 19*d. For example, if a = 12 and d = 6 for an A.P, then the value of a20 will be 12 + (20-1)*6 = 12 + 114 = 126.