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Without using a calculator evaluate
(lg 5)^2+lg2 lg50
Lg25 + lg (100)
= lg (25 * 100) (put this in Calculator)
= 3.397
Is this answer correct. Check It
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Without using a calculator evaluate
(lg 5)^2+lg2 lg50
Hmm.Tough QuestionGiven that lg 2=a and lg3=b and that lg x=3a-4b+1 find x.
Express lg cube root 972 in terms of a and b.
I am not sure of my answer..Anyone please answer this question. I've got my mock tomorrow and I don't even have a vague idea how to solve this problem:
A shelf is to contain 7 different books, of which 4 were written by Dickens and 3 by Hardy. Find the number of arrangements in which the first two books at the left-hand end are by the same author.
scouserlfc PhyZac Suchal Riaz : Plz give it a try
Oh my goodness! Your answer is absolutely right!!!!!I am not sure of my answer..
My answer is 2160
Incase it is right...here is my way
now there is 7 places and they want 2 books at one side to be of same author
so it can be Dickens or Hardy
if Dickens then it will be 4P2 (4 permutate 2 ) and left will be 5 books thus x5! (into five factorial )
so answer will be 1440
if Hardy then it will be 3P2 and left will be 5 books thus x5!
so answer will be 720
1440 + 720 = 2160
Exactly! Maybe its 0?
Here's how to do it for square matrices just in case abyone wants to refresh
I'm glad \o/thnx that helped a lot !!
I'm glad \o/
I'll try to find them if I can.hey do u hav any resources and sums on matrices?? if u do that would b a gr8 help !!
try khanacademy, well permutation and combination are considered one of the hardest chapter after relative velocity, as most of the answer is comes different from the other pupils,unlike probability its really hard to think it practically when u deal with numbersMy answer of permutation and combination never comes true. i know everything. read book. solved most of the book. but when it comes to past papers i m not able to solve it. any notes, videos or assistance is highly appreciated.
try khanacademy, well permutation and combination are considered one of the hardest chapter after relative velocity, as most of the answer is comes different from the other pupils,unlike probability its really hard to think it practically when u deal with numbers
yeah, i get really confused when to apply permutations and when to apply combinations...try khanacademy, well permutation and combination are considered one of the hardest chapter after relative velocity, as most of the answer is comes different from the other pupils,unlike probability its really hard to think it practically when u deal with numbers
ikr, and here's the most hardest permutaiton and combination question : A box contains sweets of 6 different flavours . There are atleast 2 sweets of each flavour . A girl selects 3 sweets from the box . Given that these 3 sweets are not all of the same flavour. Calculate the number of different ways she can select her 3 sweets? ..yeah, i get really confused when to apply permutations and when to apply combinations...
but the most of the time , answer comes wrong, no matter what...
these is rarely any video that i have not seen on khan academytry khanacademy, well permutation and combination are considered one of the hardest chapter after relative velocity, as most of the answer is comes different from the other pupils,unlike probability its really hard to think it practically when u deal with numbers
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