Question

which term of the series 5+2-1+-4- ..... is -22 ?

Answer 1

Answer:

10th

Step-by-step explanation:

a=5

d=-3

Let nth term of series be -22.

Then a + (n-1)d = -22

5 + (n-1)-3 = -22

5 - 3n +3 = -22

-3n = -22 - 3 - 5

-3n = -30

3n = 30

n = 30/3

n = 10

Therefore -22 is 10th term of the AP.

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