Test: Factors II - Challenging

Double click on maths expressions to zoom
Question 1:   Solve: ( 9 25 ) 1 2 + ( 16 25 ) 1 2 9 25 + 16 25
1 2
0
1
2 5
Question 2:   Solve: 0.09 + 0.81 0.49
0.2
1
0.5
0.6
Question 3:   Which of the following sets of numbers are the factors of   129 ?
1,3,43,129
1,3,47,129
1,129
1,3,63,129
Question 4:   Which of the following sets of numbers are the factors of   136 ?
1,2,4,8,17,34,68,136
1,2,4,16,32,64,136
1,2,3,6,7,18,42,136
1,2,3,6,23,46,69,136
Question 5:   Which of the following sets of numbers are prime numbers?
33,701,727
73,157,801
97,739,883
71,141,547
Question 6:   Which of the following sets of numbers are factors of   318 ?
1,3,54
3,6,57
2,3,53
2,6,51
Question 7:   11 is a factor of which the following sets of numbers?
77,144,165
110,166,231
111,154,187
121,187,880
Question 8:   Which of the following sets of numbers are prime factors of   486 ?
3
2,3,5
3,5
2,3
Question 9:   Find LCM (the lowest common multiple) of   88,99
396
1089
8712
792
Question 10:   Find HCF (the highest common factor) of   27  and   81
27
9
6
3