Agarden store has the following miscellaneous bulbs in a basket:
6 amaryllis
7 daffodils
4 lilies
3 tulips
a customer bought 4 bulbs from the basket, one of each type of flower. if the next customer selectsc1 of the remaining bulbs at random, which is closest to the probability that customer will get an amaryllis bulb

Customer buys 1 of each bulb, therefore subtract 1 from each type of bulb.
Remaining bulbs:
5 amaryllis
6 daffodils
4 lilies
3 tulips
Total number of flowers left in basket = 18 flowers
Next customer buys 1 flower at random. Thus, your odds are equal to number of amaryllis in basket/total number of flowers left in basket.
So, the odds of getting an amaryllis flower in the basket is 5/18.

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table