You'd need to know how many beads have to be in a necklace. Can you have a necklace with only 11 beads in it?
do the problem by yourself.
If he has only the beads stated, he can make 18 identical necklaces, each with 6 blue beads and 5 green beads.
There is no way to tell without knowing how big the beads are.
To make identical bracelets using all the beads, we need to find the greatest common divisor (GCD) of the three numbers: 280, 200, and 240. The GCD of 280, 200, and 240 is 40. Therefore, using all the beads, we can make 40 identical bracelets. Each bracelet would have 7 green beads (280 ÷ 40 = 7), 5 yellow beads (200 ÷ 40 = 5), and 6 blue beads (240 ÷ 40 = 6).
192
How many total beads are there. Are the beads only red or blue?
2676
Mixing the colours yellow and blue produces green. Mixing green to green makes green, but the resulting green will be different from the two greens that entered the mix (assuming they were not identical).
8
In a pattern of 11 black beads, the number of blue beads would depend on the specific pattern being followed. If the pattern alternates between black and blue beads, there would be 11 blue beads. If the pattern consists of 2 black beads followed by 1 blue bead, there would be 5 blue beads. It is important to know the specific pattern to determine the exact number of blue beads in this scenario.
32 blue, 8 red
For the probability of drawing a red bead to be one third then one third of the bead would need to be red. The number of red beads is 78 so twice as many should be 'not red' (156), at present the 'not red' beads (yellow and green) total 109, so to make the number up to the required 156 a further 47 beads need to be added so the number of blue beads needed is 47.
None, because the beads in the pattern are RED