Women's President of Indian National Congress
Women's President of Indian National CongressWomen's President of Indian National Congress, ഇന്ത്യൻ നാഷണൽ കോൺഗ്രസിന്റെ പ്രസിഡന്റായ വനിതകൾ, CODE -ASINS
Suppose there are n people in the party. The first person shakes hand with the other (n-1) guests. The second guest shakes hand with the other (n-2) guests. this will continue until the (n-1) th guest shakes hand with the nth guest.
Total number of handshakes is (n-1) + (n-2).. + 3 + 2 + 1. .
= ((n-1)(n))/2 .
For example, 6 people in a party shake hand with other guests. So how many handshakes will be there?.
=((6-1)(6))/2.
=15.
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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! . .
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:.
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. ....
Code: MBBS PAIN.
M: Malideep.
B: Bhutan.
B: Bengladesh.
S: Srilanka.
P: Pakistan.
A: Afganistan.
I: India.
N: Nepal.
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