Question

The least number that should be added to 57 so that the sum is exactly divisible by 2, 3, 4 and 5 is -------
2) True or false
a) The numbers 57 and 69 are co- primes.
b) The HCF of 17 and 18 is 1.
c) The LCM of two successive numbers is the product of the numbers.
d) The LCM of two co-primes is the sum of the numbers.
e) The HCF of two numbers is always a factor of their LCM.
3) Find LCM
a) 8 , 12
4) Find the HCF and LCM of the numbers 154, 198, 286

Answer 1

Answer:

false true

Step-by-step explanation:

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Answer 2

Answer:

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