EduSahara™ Assignment
Name : Prime Factorization and L.C.M and H.C.F
Chapter : Real Numbers
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Find the prime factorization of
28
(i)
2
2
✕
9
(ii)
2
✕
7
(iii)
2
2
✕
5
(iv)
2
3
✕
7
(v)
2
2
✕
7
Question
2
2.
Find the prime factorization of
77
(i)
7
✕
11
(ii)
7
✕
11
2
(iii)
7
✕
13
(iv)
7
✕
10
(v)
7
✕
8
Question
3
3.
Find the prime factorization of
800
(i)
2
5
✕
5
2
(ii)
5
5
✕
5
2
(iii)
2
4
✕
5
2
(iv)
2
5
✕
5
3
(v)
2
2
✕
5
2
Question
4
4.
Find the prime factorization of
8640
(i)
(-1)
6
✕
3
3
✕
5
(ii)
2
6
✕
3
3
✕
4
(iii)
2
6
✕
3
3
✕
8
(iv)
2
6
✕
3
3
✕
5
(v)
2
7
✕
3
3
✕
5
Question
5
5.
Find the number of prime factors of
45
(i)
3
(ii)
1
(iii)
0
(iv)
4
(v)
2
Question
6
6.
Find the number of prime factors of
51
(i)
3
(ii)
1
(iii)
4
(iv)
0
(v)
2
Question
7
7.
Find the number of prime factors of
624
(i)
0
(ii)
3
(iii)
4
(iv)
2
(v)
1
Question
8
8.
Find the number of prime factors of
3600
(i)
3
(ii)
2
(iii)
4
(iv)
1
(v)
0
Question
9
9.
Find the total number of factors of
36
(i)
6
(ii)
11
(iii)
10
(iv)
9
(v)
8
Question
10
10.
Find the total number of factors of
60
(i)
11
(ii)
12
(iii)
15
(iv)
13
(v)
10
Question
11
11.
Find the total number of factors of
1225
(i)
10
(ii)
8
(iii)
9
(iv)
6
(v)
11
Question
12
12.
Find the total number of factors of
288
(i)
21
(ii)
19
(iii)
17
(iv)
15
(v)
18
Question
13
13.
Find the HCF of
{10,8}
(i)
1
(ii)
0
(iii)
3
(iv)
2
(v)
5
Question
14
14.
Find the HCF of
{40,8}
(i)
8
(ii)
7
(iii)
10
(iv)
9
(v)
5
Question
15
15.
Find the HCF of
{15,6,35}
(i)
4
(ii)
1
(iii)
0
(iv)
2
(v)
(-2)
Question
16
16.
Find the HCF of
{30,21,34,20}
(i)
0
(ii)
1
(iii)
2
(iv)
(-1)
(v)
4
Question
17
17.
Find the HCF of
{240,192}
(i)
48
(ii)
51
(iii)
47
(iv)
49
(v)
45
Question
18
18.
Find the HCF of
{480,108}
(i)
13
(ii)
12
(iii)
15
(iv)
11
(v)
10
Question
19
19.
Find the HCF of
{1160,640,720}
(i)
41
(ii)
37
(iii)
43
(iv)
40
(v)
39
Question
20
20.
Find the HCF of
{360,150,330,500}
(i)
11
(ii)
8
(iii)
9
(iv)
10
(v)
13
Question
21
21.
Find the LCM of
{9,8}
(i)
69
(ii)
71
(iii)
73
(iv)
72
(v)
75
Question
22
22.
Find the LCM of
{4,15}
(i)
59
(ii)
58
(iii)
61
(iv)
60
(v)
62
Question
23
23.
Find the LCM of
{9,18,4}
(i)
35
(ii)
37
(iii)
36
(iv)
38
(v)
34
Question
24
24.
Find the LCM of
{14,16,10,9}
(i)
5040
(ii)
5043
(iii)
5038
(iv)
5039
(v)
5041
Question
25
25.
Find the LCM of
{360,120}
(i)
362
(ii)
357
(iii)
359
(iv)
360
(v)
361
Question
26
26.
Find the LCM of
{102,66}
(i)
1119
(ii)
1124
(iii)
1122
(iv)
1123
(v)
1121
Question
27
27.
Find the LCM of
{50,20,60}
(i)
301
(ii)
299
(iii)
300
(iv)
297
(v)
302
Question
28
28.
Find the LCM of
{255,300,75,240}
(i)
20399
(ii)
20398
(iii)
20401
(iv)
20403
(v)
20400
Question
29
29.
Find the product of LCM and HCF of
{6,9}
(i)
56
(ii)
53
(iii)
51
(iv)
55
(v)
54
Question
30
30.
Find the product of LCM and HCF of
{8,10}
(i)
78
(ii)
81
(iii)
83
(iv)
80
(v)
79
Question
31
31.
Find the product of LCM and HCF of
{16,28,25}
(i)
2800
(ii)
2802
(iii)
2799
(iv)
2798
(v)
2801
Question
32
32.
Find the product of LCM and HCF of
{12,9,28,14}
(i)
252
(ii)
249
(iii)
255
(iv)
253
(v)
251
Assignment Key
1) (v)
2) (i)
3) (i)
4) (iv)
5) (v)
6) (v)
7) (ii)
8) (i)
9) (iv)
10) (ii)
11) (iii)
12) (v)
13) (iv)
14) (i)
15) (ii)
16) (ii)
17) (i)
18) (ii)
19) (iv)
20) (iv)
21) (iv)
22) (iv)
23) (iii)
24) (i)
25) (iv)
26) (iii)
27) (iii)
28) (v)
29) (v)
30) (iv)
31) (i)
32) (i)
