2*15 = 30
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In the context of a double 15 in dominoes, it refers to a set of dominoes where each player starts with 15 tiles. Each tile has two ends, with each end containing a certain number of spots or pips. Therefore, a double 15 would be a domino tile where both ends have 15 spots each. This would be the highest possible tile in a double-15 set, as the highest number of spots on a domino is typically equal to the total number of tiles in the set divided by 2.
Double 15 is 30. It's like adding 15 to itself, because math isn't always as complicated as people make it out to be. So, there you have it, 30.
Double 15 is equal to 30
a double number is when somethin goes it for e.g. double 15 are thirty. My god you don't know that?
31
The maximum number of significant digits in value belonging to the double type is 15. The maximum number of significant digits is called the precision.
You double the number before it and add 1.