How many different three-member committees are there whose members are selected from a group of 10 people?

120

Explanation: The problem can be solved using combination which is a mathematical approach used to determine the number of different possible arrangements from a certain collection where the order of arrangement isn't considered.

Combination is calculated using the formula :

nCr = (n!) ÷ ((n-r)! * r!)

In the question above;

n = 10, r = 3

Therefore,

nCr = 10C3

nCr = (10!) ÷ ((10 - 3)! * 3!)

nCr = 3628800 ÷ (7! *3!)

nCr = 3628800 ÷ 5040 * 6

nCr = 3628800 ÷ 30240

nCr = 120

i believe your answer is true

sorry if wrong

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.