Dr Raju's Institute of Graduate Studies Abroad

[GREquant800]

Quant:

1. Given ‘A‘s’ probability of hitting a target is 2/3, ‘B’s’ probability of hitting the same target is 4/7. What is the probability of not hitting the target by either of them?
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2. Given that t^2 – ty < 0
Col A: t
Col B: y


3. If z = xy^2, then
Col A: mod(z)
Col B: -z


4. Given that ak = (1/k) – (1/k+1). Find the value of the expression (a1+ a2 + a3 + …… +a100)?
Note: k, 1, 2, 3, ….1000 are suffixes
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5. A person travels first 2 hrs of his journey at 55 miles/hr and next 2.2 hrs of his journey at 65 miles/hr to reach his destination. On his return journey, if he travels at 50 miles/hr then how much extra time would he take to reach back?
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6. Given the difference of age between two persons ‘A’ and ‘B’ as ‘x’ and difference of age between persons ‘B’ and ‘C’ as ‘x+y’
Col A: Difference of age between persons ‘C’ and ‘A’
Col B: 2x + y
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[kartikthakkar]

1)13/21
2)B('y is greater)
3)A
4)????
5)0.8hrs
6)D

Plz correct me if im wrong..
and how to solve 4th???


Kartik

[ElliotVictoriazd]

[mamthanaidu]

[ashok72]

1st answer is 16/21

[ElliotVictoriazd]

guys could u solve 5th one for me....

[ashok72]

A1=1/2 A100=1/10100
by formula n/2(a+l)=50(1/2+1/10100)=5051/202 correct me if im wrong

[ashok72]

in total 4.2 hrs he travela a distance of 261 km for traveling 261 kms at 50 mph 261/50 =5 hrs hence 5-4.2 gives0.8

[ashok72]

and also 6th one may be b ages cant be given in negative

[ashok72]

please explain 3rd one

[maheshreddy]

1) i think 1/7
2) D try t=1 y=2 and t=-1 , y=-2;
3)D since z can be 0
4)100/101
5) 18/5 min more
6)D im think

friends plz correct me if i am wrong
_________________
MAHESH REDDY MALLELA

[bumperstickersg]

1) given not hitting either of them so
1/3+3/7=17/21
2)t^2-2y<0

t(t-y)<0
so t<0 and t-y<0
so t<0 and t<y
so ans is (D)
3)D
4)
easy to solve this
ak=1/k-1/(k+1)
place values of k=1,2,3....till 100

u will get


1-1/2+1/2-1/3+1/3+.....-1/99+1/99-1/100

1-1/100=100/101
5) 52 mins

6) i think ( C ) is the ans

colA ::: A-C= 2x+y
col B:::; 2x+y

[bumperstickersg]

5)

2 hours =110 min
2.2 hours = 142 mints
total 252 min

252/50= 5 hours 04 mints =304 mints
304-252 =52 mints

corrt me if i am wrong

[bumperstickersg]

2 hours =110 min
2.2 hours = 132 mints
total 242 min

242/50= 4.84=276 mints
276-242 =34 mints

corrt me if i am wrong

[Rotalimitweta]

i think 1st one is 1/7 here combined prob's mean's u have to multiply i guess.....plz tell if i've done a blunder