Question

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Answer 1

Answer:

There are 30 ways of selecting the first student leaving 29 ways to select the second for a total of 30 X 29 = 870 ways

Answer 2

Answer:

Cells are the basic building blocks of all living things. ... Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.