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Permutations and combinations
Maths & Stats
asked 8 hrs ago
1. The results of 8 matches (win, lose or draw) are to be predicted. The number of different forecasts containing exactly 6 correct results is? 2. The number of different factors the number 75,600 has is 3. The number of 4 digit numbers formed with the digits 1, 1, 2, 2, 3, 4
latest answer
No answers yet!!
Mrittika
CA Foundation
★ 0
0
8
Permutations and combinations
Maths & Stats
answered 5 hrs ago
1. The number of arrangements of 10 different things taken 4 at a time in which one particular thing always occurs is 2. If nCr-1 =56 , nCr =28 and nCr+1=8 then r is ?
latest answer
For question 2, try solving for r by writing 3 equations.
Mrittika
CA Foundation
★ 0
2
13
Permutations and combinations
Maths & Stats
answered 22 hrs ago
3 ladies and 3 gents can be seated at a round table so that any two and only two of the ladies sit together . The number of ways is
latest answer
2 Ladies sitting together can be selected in ³P₂ = 6 Ways now remaining 1 Lady can not sit adjacent to these ladies so out of remaining 4 seats she can sit only on two seats hence ²P₁ = 2 Ways so Ladies can sit in 6 * 2 = 12 Ways for Three Gents 3 Seats are Left so gents can sit in ³P₃ = 6 Ways Total Number of Ways = 12 * 6 = 72
Mrittika
CA Foundation
★ 0
1
18
Class boundaries
Maths & Stats
answered 2 days ago
Mutually inclusive and exclusive
latest answer
Mutually exclusive (or exclusive) frequency distributions define classes where data values belong to only one interval, as the upper limit of one class is the lower limit of the next (e.g., 0–10, 10–20). Mutually inclusive (or inclusive) distributions include both upper/lower limits, often resulting in gaps between intervals (e.g., 0–9, 10–19), frequently requiring conversion to exclusive for analysis.
SriVidhya M S
CA Foundation
★ 0
7
50
Circular permutations
Maths & Stats
answered on 26-Mar-26 22:24
Sir, while solving the question about arranging 7 boys around a circular table such that two particular boys never sit together, you first explained that without any restriction the number of ways is (7-1)! = 6! Then, to find the cases where those two boys always sit together, you said we can consider them as one unit. That makes it 6 places, but you mentioned it as 5 places. I am confused about this step. Could you explain it again?
latest answer
Arranging n boys around a circular table is done in (n-1)! ways. For 7 boys its 6! ways When 2 boys are always together then we take these 2 boys as one unit . Now n becomes 6 ( 2 boys as 1 unit + remaining 5 boys) . So total ways is (n-1)! which is 5!. Trust this clarifies
Mrittika
CA Foundation
★ 0
1
39
STATISTICS DESCRIPTION OF DATA
Maths & Stats
answered on 24-Mar-26 13:12
I listen this class today while running class we want to make point notes and they will u provide pdf notes [Video Time Stamp: 03:54]
latest answer
We already shared printed notes U can make your own running notes
TARUN G MALLIKARJUN
CA Foundation
★ 0
1
29
Statistics unit-1 statistical description of data
Maths & Stats
answered on 13-Feb-26 16:04
Sir in this additional question bank pdf is not opening so how I can open it
latest answer
Yes sir now it has opened
Harshitha J Kulkarni Kulkarni
CA Foundation
★ 0
2
48
In ratio and proportion,indices, logarithms
Maths & Stats
answered on 02-Feb-26 15:22
I cannot find video on proportion, indices and logarithm
latest answer
Its the same module in both places.
Harshitha J Kulkarni Kulkarni
CA Foundation
★ 0
2
65
XIRR, CAGR, IRR, weighted average
Maths & Stats
answered on 19-Jan-26 11:55
Sir Kindly explain the formula explanation [Video Time Stamp: 00:13]
latest answer
XIRR and IRR is covered later. Weighted average abd CAGR you learn in foundation
Sonali Saxena
CA Foundation
★ 0
1
63
Blood relation
Maths & Stats
answered on 05-Nov-25 15:46
Sir as per the question Gopal and Ganga has 3 children and Rekha and ram are the favourite 2children of Ganga so out of 3children 2are ran and Rekha so can’t we assume that the 3rd child is Mithun because Ganga has 3children And as question it is asked that what is relation between Mohan and Mithun so we considered that Mithun is Gopal and Ganga son and Mohan and Gopal are brother it is assumed that Mohan is uncle of Mithun But as per options sir selected no relation But I think the option correct option is uncle [Video Time Stamp: 03:43]
latest answer
ICAI also does not think answer is c page s 12.10 and 12.11 https://resource.cdn.icai.org/81987bos66111-cp12.pdf
Rudransh Aheer
CA Foundation
★ 3K+
4
122