Probability 63434

There are tickets with the numbers 1, 2, 3, 4, 5, 6, 7, and 8 in the envelope. Two tickets are drawn from the envelope at a time. What is the probability that the sum of the numbers drawn will be 7? Write the result as a decimal rounded to hundredths.

Correct answer:

p =  0.11

Step-by-step explanation:

C2(8)=(28)=2!(82)!8!=2187=28  n=(28)=28 7=1+6, 2+5, 3+4  p=n3=283=0.11



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