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likoan [24]
3 years ago
10

A test has two parts, A and B, each containing 10 questions. A student needs to choose 8 questions from part A and 4 questions f

rom part B. In how many ways can he do that?
Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

Part A number of combinations of 8 from 10 = 10C8 = 10C2

= 10*9 / 2 = 45

Part B Number combinations = 10C4 = (10*9*8*7)/ (4*3*2) = 210

Total number of ways = 45 * 210 = 9450 (answer)

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Answer:

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Step-by-step explanation:

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6 0
2 years ago
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6 0
3 years ago
The container that holds the water for the football team is 7/10 full. After pouring out 5 gallons of water, it is 1/2 full. How
Shtirlitz [24]
7/10x - 5 = 1/2x
7/10x - 1/2x = 5
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x = 25 gallons <===
6 0
3 years ago
Read 2 more answers
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