The first 3 multiples of 7 are: 7, 14, and 21.
7,14,21,28,35
5 + 10+15+20=50 ans
Common multiples of 7 and 5 include 35, 70, 140, etc.
the next 5 multiples of 7 are: 14,21,28,35,42 and if you don't know the rest they are 49,56,63,70,77 and 84
The first 3 multiples of 7 are: 7, 14, and 21.
7,14,21,28,35
The first four multiples of five: 5, 10, 15, 20
7, 14, 21, 28, 35
35 and 70
35, 70, 105, etc.
The first common multiple of 3 4 5 and 7 is 420.
5 + 10+15+20=50 ans
These are the first 90 multiples of 7:714212835424956637077849198105112119126133140147154161168175182189196203210217224231238245152159266273280287294301308315322329336343350357364371378385392399406413420427434441448455462469476483490497504511518525532539546553560567574581588595602609616623630
35, 70, 105
35, 70, 105
7, 14, 21, 28, 35