Dr Raju's Institute of Graduate Studies Abroad

[Rotalimitweta]

@ mahesh dude can u xplain how u did the sd problem in prev db

[ashok72]

52 min is correct answer

[rohitathikari]

6)
t=2+2.2=4.2
d1=2*55=110
d2=2.2*65=143

d=d1+d2=253

d/50=5.06=new t

new t- t=0.86hr
_________________
crack the gre

[bumperstickersg]

actually in question they asket abt either ,or means

"or" u have to add them both


" and " u have to multiply

[murali53]

[rajat.tiet]

The answers which I came up with are:

1. 16/21
2. D
3. D
4. 100/101
5. 0.86 hrs
6. C

Kindly lemme know if there is some mistake in any.

Thanks

[UJbjjbusha]

2) try t=-2, y=-1 in this case t<y but t^2-ty< 0 won't hold
(may be there was another condition)

4) a1= 1/1 - 1/2
a2= 1/2 - 1/3
..................
a100= 1/100 -1/101
-----------------------------
a1+a2+a3...+a100= 1-1/101 = 100/101

[UJbjjbusha]

[GREquant800]

Keep the thread alive

[varun kumar]

4. ak=(1/k)-(1/k+1).
where k is 1,2,3,....1000. then

find the value of:a1+a2+a3+a4+........+a100.

ans:-

a1=(1/1)-(1/1+1)=1-1/2
a2=(1/2)-(1/1+2)=1/2-1/3
.
.
.
a100=(1/100)-(1/100+1)=(1/100)-(1/101)

a1+a2+a3+...........+a100=1-1/2+1/2-1/3+1/3-1/4......1/100-1/101
=1-(1/101)
=100/101.

ans is 100/101.

plzz correct me if any wrong...

[rathan6]

[nandana]

1.13/2
2.t^2-ty<0
t(t-y)<0,t<0,t<y
so ans b
3.A
4.101/100

5.?????
6.D
a-b=x,b-c=x+y,
c-a=b-(x+y)-(b+x)
=-y
plz correct me if am wrong

[prashanth25]

1) 1/7

2)b ans

3)a ans

4)100/101

5)7.14hrs

6) c ans

[devineni]

i think 1st ans is 1/7
combined propability means we have to multiply check once
_________________
Devineni

[pravita]

pl explain 6th question