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Jerry has a total of 23 marbles the marbles are either blue or green he has three more blue marbles than green marbles how many marbles does he have?

He will have 13 blue marbles and 10 green marbles.


Why are coloured lights called additive colours?

Coloured lights are referred to as additive colors because they are created by combining different wavelengths of light. When various colors of light are mixed, they add together to produce new colors, with the primary additive colors being red, green, and blue. This process contrasts with subtractive color mixing, where pigments absorb certain wavelengths and reflect others. In additive color mixing, the more colors you combine, the closer you get to white light.


What are the properties of an emerald?

Emerald is a gemstone in the beryl group (Beryllium aluminium silicate). Although emeralds can be colourless, when used as a gem it is usually coloured green because of small quantities of chromium (or sometimes vanadium). It has dihexagonal dipyramidal crystals. Emerald has a Mohs scale hardness of 7.5 to 8.


What is the green ball?

Before colour TV balls used in statistics were coloured black and white. Statistical questions were posed asking, say, the probability of selecting a white ball from a mixture of black and white balls hidden in a bag (sometimes white and black balls). A practical set up that, over a large number of tries, would show that the maths being examined was (statistically) good. Since colour TV there has been a preponderance of the use of coloured balls in the experiments and, often, one of the colours used is green. Also, using colour allows more than two different things to be the subject of statistical experiment. Of course colour TVs had nothing to do with this but the rest is true - honest. Beano GB


Is the green light is on the top or bottom?

The green light can be either on the top or bottom, depending on the specific context or device in question. For example, in traffic signals, the green light is typically at the bottom in a vertical arrangement, while in horizontal arrangements, it is usually on the right. If you're referring to a different device, such as a lamp or an interface, the placement may vary accordingly.