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tester [92]
3 years ago
8

87th term of 12,0,-12

Mathematics
1 answer:
Elan Coil [88]3 years ago
5 0

Answer:

a_{87} = -1020

Step-by-step explanation:

Given:

The given AP is.

12,0,-12,......

n=87

The first term of an AP a=12

Common difference d=0-12=-12

We use the the formula for nth term of an AP.

a_{n} = a+(n-1)d

for 87th term

a_{87} = 12+(87-1)(-12)

a_{87} = 12+(86)(-12)

a_{87} = 12+(-1032)

a_{87} = 12-1032

a_{87} = -1020

Therefore, The 87th term of given series is -1020.

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