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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

math 
Ms. Sue
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? 
math 
ali
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

math 
lulama
im not good on math but i like. math i don't now what can i do to be good on math.

math 
ROHIT
HHHHHHHHH

math 
ROHIT
FIND 3
TERMS IN GP WHOSE SUM & PRODUCT RESPECTIVELY ARE 28 AND 512
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