Best Answer

Here's a mathematical trick. Any number wholly divisible by 3 has the sum of its digits equal to 3 or a multiple of 3.

199 : 1 + 9 + 9 = 19....NOT divisible by 3

209 : 2 + 0 + 9 = 11....NOT divisible by 3

390 : 3 + 9 + 0 = 12....YES, this is divisible by 3

499 : 4 + 9 + 9 = 22....NOT divisible by 3

Note : 390 ÷ 3 = 130

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Q: Which of the numbers is divisble by 3 199 209 390 or 499?

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Call one of the numbers x. Since the sum is 390, the other must be 390 - x. Thus we have x(390 - x) = 34304. Solving this quadratic equation, we find the numbers are 134 and 256.

There is an infinite amount of answers to that, such as: 301 + 89 = 390 3 + 387 = 390 150 + 240 = 390

39,000,000

First, you must add all five numbers. If you do so, you should get 390. Then, you divide the sum of the numbers (390) by the amount of numbers you have (5). 390 divided by 5 gives you 78.

They are 210, 330, 390 and 462.

39×5×2

210, 330, 390, 420 and 462

330 + 60 = 390

390 squared is 390 times 390 = 152,100

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.

390

46% of 390= 46% * 390= 0.46 * 390= 179.4

390 as a fraction is 390/1.

390 is divisible by 3: 390/3 = 130 390 is not divisible by 9: 390/9 = 43.3 recurring (that is, 43.3333..) 390 is divisible by 10: 390/10 = 39

20% more of 390= 390 + (0.2 x 390) = 468

The least common multiple of the numbers 30 and 65 is 390.

70% of 390 = 273 = 70% * 390 = 70%/100% * 390 = 273

110 percent of 390 =429 110% of 390 = 110% * 390 = 110%/100% * 390 = 429/1 or 429

390 = 39,000%

390 x 3 = 1170 390 ÷ 3 = 130

390% of 119 = 390% * 119 = 3.9 * 119 = 464.1

350 + 390 = 740

The LCM is: 390