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Greenfinch(383)
About Greenfinch: Full time UK maths & physics tutor

#### What did Greenfinch acccomplish on this site?

• Greenfinch has no published lessons yet.
• Greenfinch has no published solvers yet.
• Greenfinch wrote 383 solutions (see them).

Comment from student: Oh wow! I cant believe I couldn't solve this myself... yu are such a help!!! No... a lifesaver :D thank yu soooo much :)

Comment from student: Thank you very much for your help!!

Comment from student: Thank you so much for your assistance.

Comment from student: Thanks so much.

Comment from student: thanks a million great help

Comment from student: thanks

Comment from student: thank you for your help but the answer you gave was incorrect as i found out from my teacher. But I really appreciate your time and effort. the answer is this: the probability of getting a white ball on the first selection is 4/6 and black is 2/6 if on the first pick you got a white ball:(4/6) the probability you get a black is 2/5 and white is 3/5 if on the first pick you got a black ball:(2/6) the probability you get a black is 1/5 and white is 4/5 1)so the prob they are both white is: (4/6)*(3/5) 2)and the prob the are both black is: (2/6)*(1/5) 1) 6/15 2) 1/15 so now you add them: the answer is 7/15!

Comment from student: thank you so much!!!

Comment from student: Thanks, Mr. Greenfinch. Thanks a million.

Comment from student: Thanks so much!!! I really apprecaite your help

Comment from student: okay thats exactly what i got i was just makeing sure, thank you so much(:

Comment from student: Thank You Boss you had done a great job....many many thanx....

Comment from student: Thank you very much sir. It's a relief to know that the answer that I got on this question wasn't a fluke, albeit I spent the better part of half an hour frying my brains by just trying to answer this question. Once agan, thank you very much! :)

Comment from student: Thank you so much!, just could not grasp the concepts, which math is my worse subject.

Comment from student: Thank you for taking your time out to help. I really appreciate it!

Comment from student: Thank You so much I just wish I could understand where the .98 came from and what ^ stands for.

Comment from student: Wow, so I was. I actually found that part in my notes at the very beginning! Thanks so much, guess we hadn't covered it much and I forgot? Nat

Comment from student: Thank you so much!!!!!

Comment from student: Thank you so much!!!!!

Comment from student: This was great! Thanks

Comment from student: Thank you very much, sir. You've just (figuratively, of course) saved my life on this one. More power to you and to all of the tutors in this site. :)

Comment from student: thank you so much for you time and help

Comment from student: Shortly after I asked this one I figured it out on my own, but thanks for posting an answer. Hopefully it can help other people.

Comment from student: Thank You Mr. Greenfinch for your help.

Comment from student: thank you!

Comment from student: thank you!

Comment from student: fthanks thu!

Comment from student: am so happy for solution this question 4 me .am from nigeria i will have love to donation

Comment from student: Thank you for your help I really appriciate it.

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Comment from student: Thanks a lot this was really helpful:)

Comment from student: Thanks, I guess I posted this twice. Sorry

Comment from student: Thanks. I was going nuts with this one.

Comment from student: thank you soooooooooooooooooo much!! you are such a genius, u saved my life! thanks once again

Comment from student: thank you very much!!

Comment from student: thank you so much :)

Comment from student: ok, thank you:)

Comment from student: thanks i really appreciate it!

Comment from student: Thank you for your help!

Comment from student: Thank You, I have a very irregular shaped lawn with a perimeter of 320ft, how would I calculate the sq ft?. I come up with 6,400 sq ft, is this correct?.

Comment from student: thank you!

Comment from student: Thanks so much. That really helped.

Comment from student: Thank you for you hlep! Greatly appreciated.

Comment from student: thank you

Comment from student: Thank you sir.

Comment from student: Thank you so much for your help.