Permutations and CombinationsCombination as Selection (KVPY (Kishore Vaigyanik Protsahan Yojana) StreamSA (Class 11) Math): Questions 1  2 of 2
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Question number: 1
» Permutations and Combinations » Combination as Selection
Appeared in Year: 2014
Question
Let x and y be two 2digit numbers such that y is obtained by reversing the digits of x. Suppose they also satisfy for some positive integer m. The value of is
Choices
Choice (4)  Response  

a.  112 

b.  144 

c.  154 

d.  88 

Question number: 2
» Permutations and Combinations » Combination as Selection
Appeared in Year: 2014
Question
The number of all 3digit numbers abc (in base 10) for which,
is
Choices
Choice (4)  Response  

a.  6 

b.  14 

c.  10 

d.  18 
