GRE Numeric Entry Sample Questions
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GRE Numeric Entry Sample Questions 1 | GRE Numeric Entry Sample Questions 2 | GRE Numeric Entry Sample Questions 3 | GRE Numeric Entry Sample Questions 4 | GRE Numeric Entry Sample Questions 5 | GRE Numeric Entry Sample Questions 6 | GRE Numeric Entry Sample Questions 7 | GRE Numeric Entry Sample Questions 8 | GRE Numeric Entry Sample Questions 9 | GRE Numeric Entry Sample Questions 10
1. Question :
Find the probability of the occurrence of exactly one of A and B when P(AUB)=0.59 and the probability of the
occurrence of both A and B is 0.01. [AUB=A union B]
Correct Answer: 0.58
Explanation:
Probability of occurrence of exactly one of A and B=P(AUB) – probability of occurrence of both A and B
=0.59 – 0.01
=0.58
2. Question :
Find the value of (3/y-1/x) if 3(2x+y)=7xy and 3(x+3y)=11xy.
Correct Answer: 1
Explanation:
Let 1/x=u and 1/y=v
The two equations can be rewritten as
6x+3y=7xy and 3x+9y=11xy
6/y+3/x=7 and 3/y+9/x=11
6v+3u=7 and 3v+9u=11
The equations now are
3u+6v=7 …(1)
9u+3v=11 …(2)
Multiplying (1) by 3 and subtracting from (2), we get
9u+3v-9u-18v=11-21
-15v=-10
v=2/3
u=1/3(7-6*2/3)
=1/3(21-12)/3
=9/9=1
Hence, x=1/u=1 and y=1/v=3/2
3/y-1/x=3/(3/2)-1/1
=2-1=1
3. Question :
The simple interest on a sum of money is 1/6 of the principal. The number of months of investment is equal to
twice the rate percent. Find the time in months of the investment.
Correct Answer: 20
Explanation:
Let the principal be Rs.x.
The simple interest will be Rs.x/6
Let the rate of interest be y%.
The time in months will be 2y
Simple interest=P*R*T/100, where P, R and T are the principal, rate and interest.
x/6=(x*y*2y/12)/100
y^2=100
y=10
Hence, the time in months is 2*10=20 months
[y^2=y*y]
GRE Numeric Entry Sample Questions
Click for More GRE Numeric Entry Sample Questions
GRE Numeric Entry Sample Questions 1 | GRE Numeric Entry Sample Questions 2 | GRE Numeric Entry Sample Questions 3 | GRE Numeric Entry Sample Questions 4 | GRE Numeric Entry Sample Questions 5 | GRE Numeric Entry Sample Questions 6 | GRE Numeric Entry Sample Questions 7 | GRE Numeric Entry Sample Questions 8 | GRE Numeric Entry Sample Questions 9 | GRE Numeric Entry Sample Questions 10
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