Combinations and Permutations
Combinations and PermutationsPermutation and combination related questions are common in PSC and Bank exams.
Before going to Combinations and Permutations, first lean about factorial.
If \'n\' is a positive integer then, factorial of n is denoted as n!.
5! = ( 1 x 2 x 3 x 4 x 5 ) = 120
4! = (1 x 2 x 3 x 4 ) = 24
Permutations are for lists of items, whose order matters and combinations are for group of items where order doesn’t matter. in other words,
The number of permutations of n objects taken r at a time is determined by using this formula:
P(n,r)=n!/(n−r)!
Permutation: Listing your 3 favourite football team in order, from list of 10 teams. P(10,3) = 720.
The number of combinations of n objects taken r at a time is determined by using this formula:
C(n,r)=n!/((n−r)!r!)
Combination: Picking a team of 3 people from a football coaching group of 10. C(10,3) = 10!(3!(10−3)!) = 120.
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Regulatory Bodies
Sector
Head
Headquarters
.
AMEI : Association of Mutual Funds
Mutual Funds
Mr.U.K.Sinha
Mumbai
.
ASCI : Advertising Standards Council of India
Advertising
Chairman : Mr. D. Shivakumar
Mumbai
.
BCCI : Board of Control for Cricket in India
Cricket
President : Anurag Thakur
Mumbai
.
BIS : Bureau of Indian Standards
Standards & Certification
Director General :Surina Rajan
New Delhi
.
CBFC : Central Board of Film Certification
Film/TV Certification & Censorship
Chairman : Prasoon Joshi
Mumbai
.
EEPC : Engineering Export Promotional Council of India
Trade and Investment
Chairman : Tarvi...
ആഗസ്റ്റ് 3 - ദേശീയ ഹൃദയശസ്ത്രക്രിയാദിനം.
ആഗസ്റ്റ് ആദ്യ ഞായർ - അന്തർദ്ദേശീയ സൗഹൃദ ദിനം.
ആഗസ്റ്റ് 6 - ഹിരോഷിമാ ദിനം.
ആഗസ്റ്റ് 8 - ലോക വയോജനദിനം.
ആഗസ്റ്റ് 9 - ക്വിറ്റ് ഇന്ത്യാദിനം.
ആഗസ്റ്റ് 9 - നാഗസാക്കി ദിനം.
ആഗസ്റ്റ് 12 - ലോക യുവജന ദിനം.
ആഗസ്റ്റ് 15 - ഇന്ത്യൻ സ്വാതന്ത്ര്യദിനം.
ആഗസ്റ്റ് 20 - ദേശീയ സദ്ഭാവനാ ദിനം.
ആഗസ്റ്റ് 21- സുവിത്ത് ദിനം.
ആഗസ്റ്റ് 22 - സംസ്കൃത...
Permutation and combination related questions are common in PSC and Bank exams.
Before going to Combinations and Permutations, first lean about factorial. .
If \'n\' is a positive integer then, factorial of n is denoted as n! . .
5! = ( 1 x 2 x 3 x 4 x 5 ) = 120.
4! = (1 x 2 x 3 x 4 ) = 24.
Permutations are for lists of items, whose order matters and combinations are for group of items where order doesn’t matter. in other words, .
When the order of items doesn\'t matter, it is called as Combination.
When the order of items does matter it is called as Permutation.
The number of permutations of n objects taken r at a time is determined by using this formula:.
P(n,r)=n!/(n−r)! .
Permutation : Listing your 3 favourite football team in order, from list of...
















