Sagot :
10 + 5 = 15
10 + 9 = 19
The number between 15 and 19 which is a multiple of 3 is 18.
Therefore, the number is 18.
10 + 9 = 19
The number between 15 and 19 which is a multiple of 3 is 18.
Therefore, the number is 18.
10 + 5 ⇒ 10 + 9
15 ⇒ 19
15 ⇒ 16 ⇒ 17 ⇒ 18 ⇒ 19
3, 6, 9, 12, 15, 18
15 ⇒ 19
15 ⇒ 16 ⇒ 17 ⇒ 18 ⇒ 19
3, 6, 9, 12, 15, 18