Question

which is the 5th term of the A.P 21, 18, 15....?​

Answer 1

Answer:

a = 21

d = 18 - 21

= -3

Now,

tn = a + ( n - 1 )d

=> t5 = 21 + ( 5 - 1 ) -3

=> t5 = 21 + 1

=> t5 = 22

Hence, 5 th term of the A.P is 22.

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