Jharne De Solutions for Chapter: HCF and LCM, Exercise 5: Exercise

Check whether the following is prime factorisation or not.

$60=15\times 2\times 2$

Which of the following is prime factorisation?

$95=5\times 19$

Check whether the following is prime factorisation or not.

$240=2\times 2\times 3\times 4\times 5$

Which of the following is prime factorisations?

$63=3\times 3\times 7$

Find the HCF using the long division method.

$225, 300$

Find the greatest number which divides $843$ and $949$ leaving remainders $3$ and $9$, respectively.

Find the greatest number which divides $74, 112$ and $152$ leaving remainder $2, 4$ and $6$, respectively.

Find the greatest number which divides $141, 150$ and $278$ leaving remainder $7, 5$ and $6$, respectively.