1.

Two AP's have the same difference. The difference between their 100 th term is 100 . what is the difference between their 1000 th term(brief explanation)​

Answer»

Step-by-step explanation:

GIVEN that 2 ap's have same common difference

given that their 100th terms difference is 100

let the first no. of first series be a1 and second series be a2

then, a(1)100 - a(2)100=100 ---- 1

for 1ST series ---- a100=a1+99d

2nd series ---- a100 = a2+99d

keep these values in (1)

then,

a1+99d - (a2+99d) = 100

a1+99d-a2-99d=100

therefore, a1-a2 =100 ------------------------------------------- 2

then the difference between their 1000th terms is

for 1st series --- a1000 = a1+999d

for 2nd series --- a1000 = a2+999d

their 100th terms difference is

a(1)1000-a(2)1000

a1+999d-(a2+999d)

a1+999d-a2-999d

therefore we GET the value a1-a2

from (2) a1-a2 = 100

therefore the difference between their 1000th terms is 100


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