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How many different positive two-digit integers are there such that the sum of the digits is-prime-11
At a certain college last year, a total of 260 students took College Algebra the fall semester...
Ed's own pump, operating alone at its constant rate, can empty his swimming pool in 15 hours. The...
In a class of 100 students, more students were born in October than in any other month. What is..
A group of 10 people consists of 2 married couples and 6 bachelors. A committee of 4 is to be...
If 5 integers are to be selected at random and without replacement from the list consisting of...
k is a positive integer. When k^4 is divided by 32, the remainder is 0. Which of the following...
A merchant bought a coat at a wholesale price of $120 and then sold it at a 20 percent discount...
A computer is programmed to play the game of 24 by independently replacing the symbols ▲ and @ in...
For positive integers M and N, if 24 is a divisor of M and 36 is a divisor of N, what is the...
In certain year in Country C, x sets of twins and y sets of triplets were born. If there were z...
How many positive integers less than 500 can be formed using the digits 1, 2, 3, 4, 5, assuming...
Last year the price per share of Stock X increased by k percent and the earnings per share...
How many prime numbers between 1 and 100 are factors of 7,150?
4GM180- How many positive three-digit integers are divisible by both 3 and 4?
Probability 14- n is an integer from 1 to 50, what is the probability that n(n+1) is not divisible..
Alex deposited x dollars into a new account that earned 8 percent annual interest, compounded...
A right circular cone is inscribed in a hemisphere so that the base of the cone coincides with the..
The table above shows the net change, in dollars, in the price of a share of a certain stock each...
If a=1/21+1/22+1/23+1/24+1/25+1/26+1/27+1/28+1/29+1/30. What is the value of a?
If there are fewer than 8 zeroes between the decimal point and the first nonzero digit...?
Remainders DS 4- If a certain positive integer is divided by 9, the remainder is 3. What is the...
When positive integer x is divided by 5, the remainder is 3; and when x is divided by 7, the...
Among a group of 2,500 people, 35 percent invest in municipal bonds, 18 percent invest in oil...
The range of a function is the set of all possible values of the function. If the function f is...
Pipes A and B are the pipes that fill a tank. Pipes C and D are the pipes that empty the same tank..
The average (arithmetic mean) of the integers from 200 to 400, inclusive, is how much greater than..
Remainders 5- When the positive integer A is divided by 5 and 7, the remainder is 3 and 4...
Combinatorics 35
