If we permute 6 Letters of the word 'SYSTEM', the number of permute words with a vowel at the third place are:
a) 720
b)120
c)60
d)24

• totally 6 letters
  third place vowel means only one vowel(E) in SYSTEM i.e E is fixed nor 5 letters are remaining to take 5 places although S is repeated 2 times so answer is
  5!/2 = 60
• 5 years agoHelpfull: Yes(3) No(0)
• totally 6 letters
  third place vowel means only one vowel(E) in SYSTEM
  so,we have 5 letter combination
  ans=5!=720
• 6 years agoHelpfull: Yes(0) No(2)
• total 6 letters in a given word
  here only 1 vowel is available
  so we have 5 letters=5!=120
• 5 years agoHelpfull: Yes(0) No(3)
• 60
  As there are two S in system and E is fixed at 3rd place,
  so required combinations are
  5!/2!=120/2=60
• 3 years agoHelpfull: Yes(0) No(0)