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7 14 21 28 35 42 49 56 63 70 77 84 91 98 105 112 119 126 133 140 147 154 161 168 175 182 189 196 203 210

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13y ago
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14y ago

what are the first 3 multiples?

7

14

21

so add them together!

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10y ago

3 + 6 + 9 + 12 = 30

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11y ago

21.

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10y ago

30

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Q: What is the sum of the first 2 multiples of 7?
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What is the sum of the first 4 multiples of 5?

5 + 10+15+20=50 ans


What is the sum of all 2-digit multiples of 7 whose digits sum to a prime number?

-5


What are the first two common multiples of 2 3 and 7?

The first 2 multiples are 42,84.


What is the sum of all integers not greater than 10000 that are not divisible by 7?

This is easiest to answer by summing all the numbers 1-10000 and subtracting the sum of the multiples of 7 (7, 14, 21, ..., 9996). The sum of a series is: S = (first + last) x number_of_terms / 2 For for 1-10000, the sum is: S1 = (1 + 10000) x 10000 / 2 = 10001 x 5000 = 50005000 For the multiples of 7 the sum is: S2 = (7 + 9996) x 1428 / 2 = 10003 x 714 = 7142142 So the sum of all integers not greater than 10000 that are not divisible by 7 is: S = S1 - S2 = 50005000 - 7142142 = 42,862,858


List the first three common multiples of 2 and 7 and 8?

lcm(2, 7) = 14 → first 3 common multiples are: 14, 28, 42; lcm(2, 8) = 8 → first 3 common multiples are: 8, 16, 24; lcm(7, 8) = 56 → first 3 common multiples are: 56, 112, 168; lcm(2, 7, 8) = 56 → first 3 common multiples are: 56, 112, 168.


What are the first 3 common multiples of 7 and 3?

2


What are the first 90 multiples of 7?

These are the first 90 multiples of 7:714212835424956637077849198105112119126133140147154161168175182189196203210217224231238245152159266273280287294301308315322329336343350357364371378385392399406413420427434441448455462469476483490497504511518525532539546553560567574581588595602609616623630


Write down the first 3 multiples of 7?

The first 3 multiples of 7 are: 7, 14, and 21.


What is the sum of the first 7 prime numbers?

Sum of first 7 prime numbers is equal to 2+3+5+7+11+13+17 = 58.


What does the first three common multiples of 2 and 7?

14, 28, 42


What are the first 2 multiples of 6 7 8?

168, 336, 504


First three common multiples of 2 7?

14, 28, 42