90 has an infinite number of multiples.
Multiples of 9 up to 100 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99. Multiples of 10 up to 100 are 10, 20, 30, 40, 50, 60, 70, 80. 90, 100. The only common multiple up to 100 of 9 and 10 is 90.
If half of the sum is 90 then the full sum must be 180. The three consecutive multiples of 10 which add up to 180 are 50, 60 and 70.
7,14,21,28,35,42,49,56,63,70, 77, 84.. :D Its SOOO Easy!
To find the common multiples of 54 and 90, first list the multiples of each number. The multiples of 54 are 54, 108, 162, 216, etc. The multiples of 90 are 90, 180, 270, 360, etc. The common multiples of 54 and 90 are numbers that appear in both lists, such as 180 and 360.
These are the first 90 multiples of 7:714212835424956637077849198105112119126133140147154161168175182189196203210217224231238245152159266273280287294301308315322329336343350357364371378385392399406413420427434441448455462469476483490497504511518525532539546553560567574581588595602609616623630
18,36,54,72,90
15*6 = 90 and 15*7 = 105 so there are 6 multiples.
91, 98, 105, 112, 119
Just 84.
90 has an infinite number of multiples.
Just 90.
Common multiples of 9 and 10 are all of the multiples of 90.
Multiples of 9 up to 100 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99. Multiples of 10 up to 100 are 10, 20, 30, 40, 50, 60, 70, 80. 90, 100. The only common multiple up to 100 of 9 and 10 is 90.
Oh, dude, you want common multiples of 3 and 7 up to 100? Well, let me break it down for you. The common multiples of 3 and 7 are numbers that both 3 and 7 can divide evenly into. So, the common multiples of 3 and 7 up to 100 are 21, 42, 63, and 84. Like, that's it.
30, 60, 90
Multiples of 3: 123, 45, 6, 78, and 90 Multiples of 7: 7, 14, 28, 56, and 903 Primes: 5, 23, 41, 67, and 809