I suggest you divide 9825 / 210, round the result to the nearest integer, then multiply it back with 210 to get a multiple that is close to 9825.
210 is not a multiple of 420. 420 is a multiple of 210.
210
Any multiple of 210.
210
It is 210
The lowest multiple of 210 is 210 and the lowest multiple of 360 is 360.The lowest common multiple of 210 and 360 is 2520.
No. 210 / 4 = 52.5 therefore it is not a multiple.
Yes.
Any multiple of 210.
Any multiple of 210.
21 or 35
21 has 3 as a factor and is a multiple of 7, and so as 210, 105, and an infinite number of other numbers.