hey....plss give complete solution of this question and those who dont know the solution so plss dont give any incorrect answer.......
plss frnd....give a correct and full solution☺☺
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Jay1234:
i guess im prepared for th maths exam lol
tune mujhe fansa diya
why
shivangi @_@
m sorry..but i want correct answer
plss...if u guyss then answer it
where is ur Q
are..jis pr aap itni der se chat kr rhe ho...whi ques.
oh!
sry
Answers
Answered by
1
a+10d=2/5
a+17d=3/5
----------------
-7d=-1/5
d=1/35
a+10/35=2/5
a=2/5-2/7
a=4/35
a+6d=4/35+6/35
=2/7
a+22d
4/35+22/35=26/35
sum of first five terms
n/2{2a+(n-1)d}
5/2{8/35+4/35}
5/2{6/17}
15/17
sum of 1st 21 terms
21/2{8/35+20/35}
21/2{4/7}
3/2
15/17:3/2
now u can solve the ratio
a+17d=3/5
----------------
-7d=-1/5
d=1/35
a+10/35=2/5
a=2/5-2/7
a=4/35
a+6d=4/35+6/35
=2/7
a+22d
4/35+22/35=26/35
sum of first five terms
n/2{2a+(n-1)d}
5/2{8/35+4/35}
5/2{6/17}
15/17
sum of 1st 21 terms
21/2{8/35+20/35}
21/2{4/7}
3/2
15/17:3/2
now u can solve the ratio
Answered by
1
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