# Questions tagged [gmat-exam]

The Graduate Management Admission Test is a computer adaptive test (CAT) which assesses a person's analytical, writing, quantitative, verbal, and reading skills in standard written English in preparation for being admitted into a graduate management program

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### Need help with a GMAT applied arithmetic question - please explain

I just don't understand the following question nor the answer. Can someone help me make sense as to what it's actually asking? Many thanks in advance. GMAT Princeton Review 2019 Edition Drill 8 (...
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### Sum of sides in a Cuboid

So, I came across this question: What is the value of surface area of the cuboid $C$ ? (1) The length of the diagonal of $C$ is $5$ (2) The sum of the sides of $C$ is $10$ Now, if we take the ...
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### Question based on area and perimeter of a wall

A room is 16m long, 7m broad and 8m high. Find the cost of white washing the four walls of room at Rs. 7.5 per m^2, white washing is not to be done on the doors and windows, which occupies 65 m^2. In ...
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### Work Efficiency Problem

Pascal and Rascal are two workers, working together so they can complete a given task in $10$ hours. If Pascal works for $2.5$ hours and Rascal works for $8.5$ hours, then half of the work will be ...
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### Question based on time and work(doubt in the approach given in solution)

Two persons having different productivity of labour working together can reap a field in 2 days. If one-third of the field was reaped by the first man and the rest by the other one working ...
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### Question based on time and work(doubt in the approach)

Eklavya can do 6 times the actual work in 36 days while Faizal can do one-fourth of the original work in 3 days. In how many days will both working together complete the 3 times of original work? ...
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### Question based on time and work(doubt in approach)

If 20 engineers and 20 workers can together construct a 20 km road in 20 days. 40 engineers and 40 workers together construct a 40 km road in how many days? Total work done in 20 days= 20*20=400 ...
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### Question based 0n profit loss and discount

Due to reduction of 25% in price of oranges a customer can purchase 4 oranges more for Rs. 16. What is the original price of an orange? What is given in the solution. Reduction in price=$1/4$ ...
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### Question based on profit and loss(doubt)

A person sold an electronic watch at Rs. 96 in such a way that his percentage profit is same as the cost price of the watch. If he sells it at twice the percentage profit of its previous percentage ...
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### Question based on marked price, cost price and selling price

The ratio of cost price and marked price is 2:3 and ratio of percentage profit and percentage discount is 3:2. What is the discount percentage What I Did:- Let cost price= 200 and Marked price= 300 ...
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### Question based on profit and loss(doubt in my approach)

Tinkawala purchased the articles for Rs. 123684. He sold 60% of those at a profit of 16.66% and the rest at loss. Find the loss percentage on the remaining if the overall loss is 14%. What I did Let ...
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### Another question based on pigeonhole principle

There is a drawer which contains 12 pairs of blue gloves, 12 pairs of grey and 12 pairs of black. What is the minimum number of gloves that should be picked to ensure that at I pick at least one pair ...
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### Question based on pigeonhole principle

There are 126 boxes containing apples. The number of apples in each box lies between 120 and 150(inclusive). Let F(n) indicate the number of boxes containing n apples and m indicates the maximum value ...
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### Question based on combinations(partition)

120 apples are to be distributed among 7 people such that each person has atleast 13 apples. Find the difference between the maximum and the minimum number of apples that a person gets. I don't know ...
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### Question based on combination(distribution of some or all objects in distinct groups)

5 men went fishing and caught not more than 12 fish. In how many ways it can be done if each man may have caught any number of fish? I was thinking of partition again N=12 and r=5 so, 12+5-1C5-1=16C4 ...
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### Question based on three dices (permutation and combination)

Three dice are rolled simultaneously. In how many different ways can the sum of the numbers appearing on the top faces of dices be 9? What I did: I know maximum value on the dice can be 6. So ...
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### In how many ways can a person score a total of $130$ marks in an exam consisting of $3$ sections of $50$ marks each?

In how many ways can a person score a total of $130$ marks in an exam consisting of $3$ sections of $50$ marks each? What I did:- $$a+b+c=130$$ So applying partition rule $n=130$ and $130$ marks ...
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### How many ways can a committee of $3$ members be selected from $4$ couples if no couple appears in the committee? [closed]

There are 4 married couples in a club. The number of ways of choosing a committee of 3 members so that no couple appears in the committee is? I want to know, How the number of ways of having a ...
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### Question based on biased coins

P and Q are playing a game in which they toss a coin alternately. The probability that the coin shows a head is 0.2. The game continues until the coin shows head and the person on whose turn a head ...
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### Question based on unbiased dices( probability)

In a throw of 1 unbiased dice, what is the most probable sum of the numbers that show on the upper surface of dice? I know how to find the most probable number that appears on the upper surface of ...
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### Did not understand the solution of this question based on probability

Three shots are fired at a target. The odds in favour of the first hitting the target is 2:1, that of the second hitting the target is 3:1 and the odds against the third hitting the target is 2:1. ...
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### doubt on this question based on probability

On any day, Raman is twice as likely to go to gymnasium as he is likely to go for volleyball practice. Given that Raman necessarily goes for exactly one of the two activities each day, what is the ...
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### Question based on binomial expansion

In the expansion of $(a+b+c)^{20}$, find the coefficient of $a^{17} b^2c$ $C\binom {20} {3}$ $(b+c)^3$ which gives $a^{17}[b^3+c^3+bc(b+c)]$ $a^{17}[b^3+c^3+b^2+bc^2]$ Coefficient of $a^{17}b^2c$ ...
If the sum of the series $$\frac2{\sqrt2+\sqrt6}+\frac2{\sqrt4+\sqrt8}+\frac2{\sqrt6+\sqrt{10}}+\ldots+\frac2{\sqrt{60}+\sqrt{64}}=\sqrt{A}-\sqrt{B}+{C}$$ Find the value of $A+B$ Okay, this series ...