Test: Factors II - Normal

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Question 1:   Solve: $\sqrt{16}+\sqrt{25}$
$\sqrt{41}$
$6.4$
$11$
$9$
Question 2:   Solve: ${2}^{2}\cdot {3}^{2}\cdot {5}^{2}$
$900$
$60$
$100$
$800$
Question 3:   Which of the following sets of numbers are factors of  $54$ ?
$1,2,6,9,14,18,27,54$
$1,2,3,9,12,24,27,54$
$1,2,3,6,9,18,27,54$
$1,2,3,6,12,27,54$
Question 4:   Which of the following sets of numbers are factors of  $46$ ?
$1,2,4,6,9,46$
$1,2,3,12,46$
$1,2,6,8,46$
$1,2,23,46$
Question 5:   Which of the following sets of numbers are prime numbers?
$13,19,51$
$11,17,53$
$3,7,14$
$5,23,57$
Question 6:   Which of the following sets of numbers are factors of $18$ ?
$1,2,3,4,6,9$
$1,2,3,6,9,18$
$1,2,3,9,12,18$
$2,3,4,6,9$
Question 7:   $7$ is a factor of which of the following sets of numbers?
$28,41,56$
$42,77,84$
$21,49,57$
$7,21,27$
Question 8:   Which of the following sets of numbers are prime factors of $120$ ?
$2,3,7$
$1,2,3,5$
$1,2,3,7$
$2,3,5$
Question 9:   Find LCM (the lowest common multiple) of  $45$  and  $55$
$495$
$365$
$110$
$245$
Question 10:   Find HCF (the highest common factor) of  $60$  and  $75$
$10$
$5$
$15$
$25$