Quantitative Aptitude

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9

Quant Set 2

1 / 20

A fair coin is tossed 'n' times. If the number of outcomes in which two heads will appear is 28, what is the value of 'n'?

2 / 20

What is the % change in the area of a rectangle when its length increases by 10% and its width decreases by 10%?

3 / 20

A man can hit a target once in 4 shots. If he fires 4 shots in succession, what is the probability that he will hit his target?

4 / 20

What is the probability that the position in which the consonants appear remain unchanged when the letters of the word "Math" are re-arranged?

5 / 20

A wheel of a car of radius 21 cms is rotating at 600 RPM. What is the speed of the car in km/hr?

6 / 20

The arithmetic mean of the 5 consecutive integers starting with 's' is 'a'. What is the arithmetic mean of 9 consecutive integers that start with s + 2 ?

7 / 20

If the cost price of 20 articles is equal to the selling price of 25 articles, what is the % profit or % loss made by the merchant?

8 / 20

In the first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7, and a remainder 9 when divided by 11?

9 / 20

In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?

10 / 20

How many trailing zeros will be there after the rightmost non-zero digit in the value of 25!?

11 / 20

How many five-digit positive integers comprising only the digits 1, 2, 3, and 4, each appearing at least once, exist such that the number is divisible by 4?

12 / 20

How many different positive integers exist between 106 and 107, the sum of whose digits is equal to 2?

13 / 20

Ram, who is half as efficient as Krish, will take 24 days to complete a task if he worked alone. If Ram and Krish worked together, how long will they take to complete the task?

14 / 20

How many keystrokes are needed to type numbers from 1 to 1000?

15 / 20

The average of 5 numbers is 6. The average of 3 of them is 8. What is the average of the remaining two numbers ?

16 / 20

Data Sufficiency: Set A contains distinct integers: A = {2, 4, 6, -8, x, y}. When two numbers from this set are selected and multiplied, what is the probability that the product is less than zero?

17 / 20

If the price of gasoline increases by 25% and Ron intends to spend only 15% more on gasoline, by how much % should he reduce the quantity of gasoline that he buys?

18 / 20

Positive integers from 1 to 45, inclusive are placed in 5 groups of 9 each. What is the highest possible average of the medians of these 5 groups ?

19 / 20

A, B, and C each working alone can complete a job in 6, 8, and 12 days respectively. If all three of them work together to complete a job and earn $2340, what will be C's share of the earnings?

20 / 20

By selling an article at 80% of its marked price, a merchant makes a loss of 12%. What % profit will the merchant make if the article is sold at 95% of its marked price?

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