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permuntation and combinations
Maths & Stats
answered on 31-Mar-23 08:16
I have a doubt regarding , in permutation and combinations , questions are given by ICAI Some of the questions they already mentioned about that is permuntation or combination . If it is not mentioned , how to find permuntation questions or combination questions ? Are there any key words or anything to understand , Can anyone explain to me ?
latest answer
If the order doesn't matter then we have a combination, if the order does matter then we have a permutation
Vignesh s
CA Inter
★ 3K+
1
413
Bivariate data for non determination
Maths & Stats
answered on 29-Mar-23 12:48
In a bivariate data by = 0.24 and by = 0.58, then the coefficient of non-determination is given by: (a) 0.2 (c) 0.002 (b) 0.02 (d) 0.03
latest answer
The coefficient of non-determination is given by 1-r^2. r will be sqrt of 0.24 x 0.58 And there looks like an error in the given options.
Sai G
CA Inter
★ 6K+
1
446
How to find byx
Maths & Stats
answered on 29-Mar-23 12:54
The following data is given, based on 450 students for marks in Statistics and Economics at a certain examination Mean marks in Statistics =40 Mean marks in Economics =48 S.D. of marks (Statistics) = 12 Variance of marks (Economics) =256 Sum of the products of deviations of marks from their respective mean = 42075. The average marks in Economics of candidates who obtained 50 marks in Statistics is (a) 45 (c)54 (b) 54.5
latest answer
Answer is 54.5. First find correlation coefficient which will come out to be 0.49. Based on this, find regression equation of Y (Marks in Economics) on X (Marks in Statistics). which will be Y = 0.65X +22. Substitute X = 50 and then calculate Y. Try this, if any doubt remains, feel free to mention here.
Sai G
CA Inter
★ 6K+
1
685
Ratios
Maths & Stats
answered on 22-Mar-23 13:16
Here in this question factor multiplying ratio would be 7/6 or 6/7
latest answer
56.7kg/x = 7/6 Do cross multiplication you will get the answer. Question is correct.
Arshleen Kaur
CA Inter
★ 2K+
1
425
Permutations and combinations
Maths & Stats
answered on 29-Mar-23 09:38
Question no 21 I know the answer and solved it before but now I forgot. Anyone if know the answer please tell in this thread.
latest answer
Add these 3 cases and you get 1540
Virendra Saini
CA Inter
★ 0
3
395
Permutations and combinations
Maths & Stats
answered on 21-Mar-23 13:50
Question no 21 I know the answer and solved it before but now I forgot. Anyone if know the answer please tell in this thread.
latest answer
See this picture. You will get clarity
Virendra Saini
CA Inter
★ 0
7
494
Sequence
Maths & Stats
answered on 15-Mar-23 20:12
Plz explain
latest answer
Kindly refer to the attached pic. I tried option wise verification.
Vikas Patwari
CA Foundation
★ 3K+
1
418
Sets
Maths & Stats
answered on 25-Feb-23 18:24
How dobyouvsolve the marked questions from the additional question bank
latest answer
Detailed Solutions for questions are available in the pdf in the course
Vedant Vijay
CA Foundation
★ 1K+
2
692
Maths stats lr
Maths & Stats
answered on 25-Feb-23 18:03
Can u pls give me suggestion on how to study effectively for maths?
latest answer
Be clear with the concepts and formulas And attempt a lot of MTP questions or really helps
praveen
CA Foundation
★ 320
5
395
Permutation and combination
Maths & Stats
answered on 21-Feb-23 15:52
A bag contains 3 one rupee coins, 4 fifty paise coins and 5 tdn paise coins.how many selections of money can be formed by taking atleast one coin from the bag
latest answer
Kindly refer to the attached image.
Bavani
CA Inter
★ 230
2
407