math
posted by a student is selected at is the probability the th .
a student is selected at is the probability the the randomly selected stundent is neither a 10th grade nor an 11th grade express your answer in fraction in simplest form

Please reread your post. Does it make sense to you? Clarify and repost if you want help.
Also  what grades are being considered in addition to 10th and 11th? 
i am good at math i go to school every day i love school so much i love my teacher and my school is name is sonoran sky

im not good on math but i like. math i don't now what can i do to be good on math.
Respond to this Question
Similar Questions

probabilityv
A school's administrators are concerned about absenteeism at their school and the eect it has on students' grades. The following data were compiled, based on a sample of students. Student's Absent Medium Absent Grade Infrequently … 
Algebra
What is the probability that a randomly selected threedigit number is divisible by 5? 
Statistics
If one card is randomly selected, what is the probability that the card selected is neither an ace nor a jack? 
statistics
What is the probability for a: a. Randomly selected person being a male in grade E? 
statistics
Give the probability in decimal form (correct to two decimal places). A calculator may be helpful. Last semester, a certain professor gave 35 As out of 259 grades. If one of the professor's students from last semester were selected … 
math
Give the probability in decimal form (correct to two decimal places). A calculator may be helpful. Last semester, a certain professor gave 15 As out of 396 grades. If one of the professor's students from last semester were selected … 
statistic
Im confusing the questions with and / or. table: Grade level  Bird  Cat  Dog  Fish 6th graders  9  27  42  3 7th graders  12  36  56  4 1. what is the probability randomly selected student is an 7th grader and prefers a … 
math
What is the probability that a randomly selected threedigit number is divisible by 11? 
Math
In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment … 
Math
In Exercises 16–18, use the following information. At a college, 43% of the students are women, 15% of the students are art majors, 4% have not chosen a major, and 8% are women and art majors. A faculty member conducts an experiment …