Forums
Permutations and Combinations
Maths & Stats
answered on 16-Jul-24 21:53
There is one question: Prove that 33 ! is divisible by 2^15. What is the largest integer n such that 33! is divisible by 2n?
latest answer
In terms of prime factors 33! can be written as 2^a ⋅ 3^b 5^c ⋅ 7^d … (33!)=33/2+33/2^2+33/2^3+33/2^4+33/2^5 =16+8+4+2+1=31 Hence, the exponent of 2 in 33! is 31. ∴ Largest value of n is 31.
Vageesh Hegde
CA Foundation
★ 0
2
57
Dispersion in stats
Maths & Stats
answered on 16-Jul-24 21:57
Que 9 me mrko smjh nai rha so pls pura que detail m btana
latest answer
Pfa
Mahi Gupta
CA Foundation
★ 0
1
50
Doubt
Maths & Stats
answered on 09-Jul-24 21:48
Can you please explain the step that I underlined. Which property is taken in that step? And even if that is (7-4√3)^2 the answer will the different.
latest answer
Denominator is in the form of (a-b). So they used (a+b) and multiplied both Denominator and Numerator.
Aamina Muneera
CA Foundation
★ 880
1
50
Permutations and combinations
Maths & Stats
answered on 11-Jul-24 16:13
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
latest answer
Select 2 ladies from 3 = 3c2 = 3 ways Now they can sit in 2 ways Considering these 2 ladies a group,the remaining lady has only 2 seats left which she can occupy in 2 ways 3 men can arrange themselves in 3! = 6 ways Total ways is 3*2*2*6 =72 ways
Sathya S
CA Foundation
★ 100
2
68
Doubt
Maths & Stats
answered on 01-Jul-24 07:34
Chapter 1, additional question bank, qs no 46. Can you explain the step that I underlined.
latest answer
Please follow the formula and check the next step.
Aamina Muneera
CA Foundation
★ 880
3
61
Permutation
Maths & Stats
answered on 01-Jul-24 07:33
Why repeation is not allowed in rearrangement
latest answer
In the example COMPUTER is already the word given and they are asking for number of rearrangement. So you cannot COMPUTER again. Total answer- 1 word already given which is COMPUTER
Sathya S
CA Foundation
★ 100
1
57
Permutations
Maths & Stats
answered on 29-Jun-24 12:11
Why 0 is not taken in thousands and hundreds place while forming permutation for 4 digit number
latest answer
0 is not taken at the left most place because it no value. For example- 0321 is not a four digit number . It is a three digit number.
Sathya S
CA Foundation
★ 100
1
61
Equation
Maths & Stats
answered on 28-Jun-24 19:59
if α,β be the roots of 2x^2-4x-1=0, find the value of α^2/β+β^2/α
latest answer
Here is the solution
VIJAY EDITZZ
CA Foundation
★ 0
1
75
Indices
Maths & Stats
answered on 18-Jun-24 14:39
Exercise 1(C) question no. 18, in the pdf the power value is 3/2 but in the text book it is 2/3.
latest answer
Here is right solution
Aamina Muneera
CA Foundation
★ 880
3
87
Correlation and regression
Maths & Stats
answered on 17-Jun-24 21:35
Page no 17.56 extra question no 42
latest answer
Answer is D because we need 2 equations to determine which is X on Y and Y on X.
Bharavi Kothari
CA Foundation
★ 20K+
6
80