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Zanzabum
3 years ago
9

Trevor has a secret number composed of 2 digits that are not repeated what is the probability of someone guessing trevor's numbe

r? and explain ??
Mathematics
1 answer:
seropon [69]3 years ago
7 0
22 digits that means it goes from 10-99, excluding numbers such as 11, 22, 33, 44, 55, 66, 77, 88, 99. Therefore, the amount of secret numbers is 81. The probability of someone guessing it is 1/81.
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Anyone ...Pls solve
expeople1 [14]
Given:
- Bought n items of product A at 1/5 rs each
- bought n items of product B at 1/4 rs each
He mixed the two items and sold each at 2/9 rs each.
He lost 3 rs in the above batch of articles.

Solution:
revenue = 2n* (2/9) rs = 4n/9 rs
cost = n/5+n/4 rs = n(1/5+1/4)
Profit = revenue-cost = 4n/9-n(1/5+1/4) = -3 rs

Solve for n
4n/9-n(1/5+1/4) = -3 
factor out n
n(4/9-1/5-1/4)=-3
n(80-36-45)/180=-3
-n/180=-3
n=3*180=540

Total number of products bought
= n+n = 540+540 = 1080
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3 years ago
What is ungrouping in 3rd grade math?
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2 years ago
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Valentin [98]
I would say she should spin the wheel because, if she rolled the dice it would take a long time to get 2 5's on both dice at one time.
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3 years ago
the lengths of the sides of a triangle are consecutive even integers. the perimeter is 42. what is the length of the longest sid
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Answer:

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Step-by-step explanation:

x+(x-2)+(x-4)=42\\3x-6=42\\3(x-2)=42\\x-2=14\\x=16

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