Test: Divisibility/Multiples/Factors - GMAT MCQ
10 Questions MCQ Test - Test: Divisibility/Multiples/Factors
If n is the product of the squares of 4 different prime numbers, how many factors does n have?
If x and y are consecutive positive integer multiples of 3, what is the greatest integer j such that xy/j is always an integer?
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What is the smallest prime factor of (842−132)?
Which of the following is the lowest positive integer that is divisible by 2, 3, 4, 5, 6, 7, 8, and 9?
A beacon flashes its light every 12 seconds, another every 18 seconds and a third every minute. First time, the three beacons flash simultaneously at 6.30 pm. At what time will the three beacons flash simultaneously second time?
What is the number of positive integers less than 500 which have an odd number of divisors?
When integer n is divided by 15, the remainder is 5. Which of the following has a remainder of 10 when divided by 15 ?
I. 3n
II. 5n
III. 4n + 10
How many multiples of 6 are less than 5000, and also multiples of 8?
A positive integer n is completely divisible by 12 and 8. If √n lies between 5 and 8, exclusive, how many values of n are possible?
What is the number of multiples of 6 from -35 to 69?
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