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Students from the Delhi Public School are writing their exams in Kendriya Vidyalaya. There are 60 students writing their Hindi exams, 72 students writing French exam, and 96 students writing their English exams. The authorities of the Kendriya Vidyalaya have to make arrangements such that each classroom contains an equal number of students. What is the minimum number of classrooms required to accommodate all students of Delhi Public School?

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Important Questions on Numbers and Their Properties

EASY
CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 38
In the Jyotirmayi school, all classes started at 9:00 am. The school has three sections: primary, middle, and secondary. Each class for the primary section lasts for 30 min, for the middle section for 45 min, and for the secondary section for 30 min. A lunch break has to be given for the entire school when each of three sections has just finished a respective class and are free. What is the earliest time for the lunch break?
MEDIUM
CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 39
In the firing range, 4 shooters are firing at their respective targets. The first, the second, the third and the fourth shooter hits the target once every 5 s, 6 s, 7 s and 8 s, respectively. If all of them hit their target at 10:00 am, when till they hit their target together again?
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 40
Two friends Harry and Jayesh were discussing two numbers. They found the two numbers to be such that one was twice the other. However, both had the same number of prime factors, while the larger one had 4 more factors than the smaller one. What are the numbers?
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 41
To celebrate their victory in the World Cup, the Sri Lankans distributed sweets. If the sweets were distributed among 11 players, 2 sweets were left. When the sweets were distributed to 11 players, 3 extra players, and 1 coach, even then 2 sweets were left. What is the minimum number of sweets in the box?
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 42
The first 20 natural numbers from 1 to 20 are written next to each other to form a 31-digit number N=1234567891011121314151617181920. What is the remainder when this number is divided by 16?
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 43
Two friends Kanti and Sridhar were trying to find the HCF of 50 distinct numbers. If they were finding the HCF of two numbers at a time, how many times this operation should be repeated to find the HCF of 50 numbers?
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 44
How many zeroes will be there at the end of N=18!+19!? 
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CAT
IMPORTANT
Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 45
Manish was dividing two numbers by a certain divisor and obtained remainders as 437 and 298, respectively. When he divides the sum of the two numbers by the same divisor, the remainder is 236. What is the divisor?