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UGC-NET | UGC NET CS 2016 Aug – III | Question 32

  • Last Updated : 17 Apr, 2018

Consider a hash table of size m = 10000, and the hash function h(K) = floor (m(KA mod 1)) for A = ( √(5) – 1)/2. The key 123456 is mapped to location ______.
(A) 46
(B) 41
(C) 43
(D) 48


Answer: (B)

Explanation: Given hash function: h(K) = floor (m (K*A mod 1))
where A = ( √(5) – 1)/2

h(123456) = floor(10000 * (123456 * (√5 − 1) / 2) mod 1) 
          = floor(10000 * (76300.004115 mod 1)
          = floor(10000 * (.004115))
          = 41.15
          = 41 

So, option (B) is correct.

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