Question

10th term of an athematic sequence 25 and 25th term is 10. what is the common difference ​

Answer 1

Answer:

-1

Step-by-step explanation:

according to Question

a+9d=25

a+24d=10

on simultaneously solving both the equations we get

d=-1

Answer 2

a10 = 25 or a + 9d = 25

a25 = 10 or a + 24d =10

Now subtract these two equations,

-15d = 15

d = -1

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