Hello, mynameiscosine!
This requires a "trick" that you haven't thought of . . .
Re-write the fractions: .
Got it?
Hi all. I am doing revision for Elementary and Additional Mathematics and need help with the following question for my elementary mathematics GCSE O Level.
Thank you.
I hope someone is able to help me with the following questions. Thank you very much
1) Find the next two value of the sequence
7/8 , 2/3 , 1/2 , 4/11 , 1/4
I can't figure out any formula for this.
I tried using the arithmetic and geometric sequences and series, but I still can't find it.
2) A data has the following value, a, b, c, 4 and 8. The mean for a, b, and c, is 8
the standard deviation for a b and c is sqrt(7)
find the standard deviation for the 5 values.
I did up till (a-8)^{2} + (b-8)^{2} + (c-8)^{2} = 21
I found the mean for the 5 values is 7.2.
Thank you for reading and the help!
@Soroban
Ohhh!
I should have seen this pattern. You made it so easy! lol
The next two number should be
2/13, 1/14
Am I right?
Thank you very much!
How about the second question for standard deviation?
Thanks again!