Confusing facts for PSC Exams Part 2

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ഇന്ത്യയിലെ ഏറ്റവും നീളം കൂടിയ നദി? ഗംഗ (2525 കി.മീ.).
ഇന്ത്യയിലെ ഏറ്റവും നീളം കൂടിയ രണ്ടാമത്തെ നദിയാണ്? ഗോദാവരി (1465 കി.മീ.).
ഇന്ത്യയിൽ ഏറ്റവും കൂടുതൽ ജലം ഉൾക്കൊള്ളുന്ന നദി? ബ്രഹ്മപുത്ര.
ഇന്ത്യൻ ഉപഭൂഖണ്ഡത്തിലെ ഏറ്റവും നീളം കൂടിയ നദി? സിന്ധു.
ഉപദ്വീപിയാൻ നദികളിൽ പടിഞ്ഞാറോട്ടൊഴുകുന്ന ഏറ്റവും വലിയ നദി? നർമദ (1312 കി.മീ.).
ഉപദ്വീപീയ ഇന്ത്യയിലെ ഏറ്റവും നീളം കൂടിയ നദ�...

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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! . .


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...

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Father of cloning = Ian Wilmut.
Father of computer = Charles Babbage.
Father of computer science = Alan Turing.
Father of Co-operation = Robert Owen.
Father of economics = Adam Smith.
Father of English Poetry = Geoffrey Chaucer.
Father of Essay = Montaigne.
Father of Genetics = Gregor Mendel.
Father of Greek Democracy = Clesthenes.
Father of Green Revolution = Norman Borlaug.
Father of history = Herodotus.
Father of internet = Vint Cerf.
Father of Jurisprudence = John Locke.
Father of Modern Cartoon = William Hogarth.
Father of Modern Tourism = Thomas Cook.
Father of Nuclear Physics = Rutherford.
Father of Printing = Guttenberg.
Father of psychology =  Wilhelm Wundt.
Father of Reformation = Martin Luther King.
Father of Renaissance = Petrarch.
Father of Science = Galileo Galilei. LIN...

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