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LCM of three numbers 28, 44, 132 is -

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Important Questions on Real Numbers

EASY

A natural number when divided by 5,6,7, and 8 leaves the remainder 4 in each case. What will be the second number when these numbers are presented in ascending order?

EASY
At a telephone exchange, three phones ring at intervals of 20 sec, 24 sec, and 30 sec. If they ring together at 11:25 am, when will they next ring together?
EASY
The LCM and the HCF of the numbers 28 and 42 are in the ratio:
EASY
What is the smallest integer that is a multiple of 5, 8 and 15?
EASY
Which of the following is true?
EASY
What is the smallest integer that is divisible by 3, 7 and 18?
MEDIUM
What is the least common multiple of 49 and 1627?
EASY
The HCF of two numbers is 21 and their LCM is 221 times the HCF. If one of the numbers lies between 200 and 300, then the sum of the digits of the other number is:
EASY

Find the HCF of 3, 7 and 15. 

(A) 7 

(B) 15 

(C) 3 

(D) 1 

EASY
The LCM and HCF of two numbers are 171360 and 14 respectively. If one of the numbers is 2142 then what is the second number? 
MEDIUM
The HCF of two numbers is 29, and the other two factors of their LCM are 15 and 13. The smaller of the two numbers is:
EASY
What is the Lowest Common Multiple of 2, 3 and 7?
EASY
The greatest number of four digits which is exactly divisible by 24, 36 and 54 is_____.
MEDIUM
What is the least common multiple of 65 and 825?
EASY
The HCF and LCM of two numbers is 6 and 5040 respectively. If one of the numbers is 210, then the other number is:
MEDIUM

When 2238, 4309 and 8151 are divided by a certain 3-digit number, the remainder in each case is same. The remainder is _______.

EASY
A and B start walking together from a point. Their steps measures 72 cm and 84 cm respectively. What is the minimum distance they should walk so that each takes exact number of steps?
MEDIUM
Find the number lying between 900 and 1000, which when divided by 38 and 57 leaves in each case a reminder 23.
EASY
A, B, C have 152,171 and 266 marbles, respectively. They decide to divide these marbles in parts such that all parts have the same number of marbles. Also, they cannot give or take the marbles. Find the minimum possible number of parts that can be made.
EASY
What will be the Highest Common Factor of 4, 8 and 12?