Olympiad class 5 maths LCM and HCF

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Each prime numbers has exactly factor.

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The smallest number that is divisible by 28, 42 and 56 is:

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LCM of 120,180 and 280 is:

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Prime numbers which differ by two are called ______.

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Which of the following is a pair of co- prime numbers?

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Which of the following is not divisible by 3?

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The factors of 24 are:

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Which is the only ever number?

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The LCM of two co- prime numbers is equal to their ______.

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The least prime number is_____.

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HCF of 45 and 30 is

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The largest 2- digit prime number is____.

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All numbers are multiple of ______.

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____ is a factor of every number.

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The HCF of two numbers is 144 and their LCM is 2880.if one of the numbers is 720. What is the other numbers?

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2Ã—5Ã—7=70.So, 70 is a multiple of

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________ is neither prime nor composite number.

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The HCF of 18,24 and 30 is:

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How many prime numbers are there from 1 to 100?

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The first two common multiple of 5 and 3 are _____and _____.

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Numbers that end in 0 or 5 are divisible by ______.

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The greatest number which divides 148 and 100 leaving remainder 4 in each case is:

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The smallest composite number is ____.

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LCM of 12,18,24 and 36 is

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There are there prime numbers between:

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