How many ways are there to choose 6 shirts out of 10 to take to camp?

a. 60
b. 126
c. 151,200
d. 210

d.

Explanation:

The keywords how many ways, signal combinations, especially since order does not matter, so we use the combination formula:

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* This is mathematics, not health.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.