(i) First five multiples of 7
7 × 1 = 7
7 × 2 = 14
7 × 3 = 21
7 × 4 = 28
7 × 5 = 35
Thus, first five multiples of 7, are 7.
(ii) First five multiples of 12
12 × 1 = 12
12 × 2 = 24
12 × 3 = 36
12 × 4 = 48
12 × 5 = 60
Thus first five multiples of 12 are 12. 24, 36, 48 and 60.
(iii) First five multiples of 17
17 × 1 = 17
17 × 2 = 34
17 × 3 = 51
17 × 4 = 68
17 × 5 = 85
Thus, first five multiples of 17 are 17, 34, 51, 68 and 85.
(iv) First five multiples of 15
15 × 1 = 15
15 × 2 = 30
15 × 3 = 45
15 × 4 = 60
15 × 5 = 75
Thus, first five multiples of 16 are 15, 30, 45, 60 and 75.
(v) First five multiples of 18
18 × 1 = 18
18 × 2 = 36
18 × 3 = 54
18 × 4 = 72
18 × 5 = 90
Thus, first five multiples of 18 are 18, 36, 54, 72 and 90.