Question

solve with explain plz ​

Answer 1

Answer:

Step-by-step explanation:

ap -----> 8,10,12.............126

a= 8

d= 10-8

 =2

from the end ---------->126,124,...............12,10,8

a=126

d= 124-126

  = -2

n = 10  (given)

an = a+(n-1)d

an = 126 + 9(-2)

     = 126 - 18

     = 108

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Answer 2

Hi ,

8 , 10 ,12 , ..., 124 , 126 is an A.P

Rearranging the given A.P in

reverse order we get,

126 , 124 , ....., 12 , 10 , 8

First term = a = 126

Common difference = a2 - a1

d = 124 - 126

d = -2

n = 10

We know that ,

n th term = an = a + ( n - 1 ) d

10th term = a10

a10 = a + 9d

= 126 + 9 ( - 2 )

= 126 - 18

a10 = 108

Therefore ,

10th term from the end of the A.P

= 108

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