OA 
@ScareCrow28 said:
Sum till 2001 terms = 2a2 = 986 ?
@albiesriram said:
a3=a2-a1
a4=a3-a2=-a1
a5=a4-a3=-a2
a6=a5-a4=a1-a2
a7=a1
a8=a2
a9=a2-a1
hence it is repeated after every 6 terms
a3+a4+...+a8=0
S1492=
1490 mod 6=2
a1+a2+a3+a4=1985
a1+a2+a2-a1-a1=1985
2a2-a1=1985
s1985
1983 mod 6=3
a1+a2+a3+a4+a5=1492
a1+a2+a2-a1-a1-a2=1492
a2-a1=1492
a2=493
a1=-999
s2001=
1999 mod 6=1
a1+a2+a3
a1+a2+a2-a1=2a2=986??
Geometry question of the day:- 
@albiesriram said:
if we take first two nos as a , b
series will be
a,b,b-a,-a,b,b+a,a,-b,-b-a,-a,b,.........The highlighted part will get repeated and add upto zero.
so from condition in ques we get 2 eqn
2b - a = 1985
3b - a = 1492
------------------
b = -493
sum of first 2001 terms = 2b (rest all will be zero)
so OA = -986 ?
series will be
a,b,b-a,-a,b,b+a,a,-b,-b-a,-a,b,.........The highlighted part will get repeated and add upto zero.
so from condition in ques we get 2 eqn
2b - a = 1985
3b - a = 1492
------------------
b = -493
sum of first 2001 terms = 2b (rest all will be zero)
so OA = -986 ?
@albiesriram said:Geometry question of the day:-
Is it 315? Might have some error - got the two missing areas as 70 and 56...
regards
scrabbler
regards
scrabbler
@scrabbler said:Is it 315? Might have some error - got the two missing areas as 70 and 56...regardsscrabbler
How can it contain if it is solved by @scrabbler . 
on the money!!
on the money!!@albiesriram said:Geometry question of the day:-
area (left missing part) = 76
area(right missing part) = 80
65 * 4 = 180
(the problem)area = 315
area(left missing part) = 56
area(right missing part = 70
@albiesriram said:Geometry question of the day:-
(84+a)/b = 2/1
a/70 =84/(b+35)
a=56
b=70
total=56+70+40+30+35+84=315
@rnishant231 said:area = 345 ?area (left missing part) = 76area(right missing part) = 80
56 , 70 the missing ones.
Ram marks up his goods by 40% and gives a discount of 10%.Apart from this,he uses faulty balance which reads 800 gms for 1000 gms .What is his net profit/loss percentage?
@albiesriram said:Geometry question of the day:-
area of the two triangles that are not given
56 and 70
124+65+126 = 315
@albiesriram said:Geometry question of the day:-
84+x/40=y+35/30
and x+84+y/105=y/35
solve and we get x=56 and y=70
so area= 315 :)
Team BV--Pratik Gauri
@Ashank.Dubey said:9 is correct answer.
Er, what options? The solution you posted says "use options" but original posts did not have options so it was a much more painful solution!!
regards
scrabbler
regards
scrabbler