Question

The number of arrangements of word 'DELHI' in which E preceds I is.
(a) 60
(b) 30
(c) 150
(d) 75
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Answer 1

Answer:

option (a) is correct

Step-by-step explanation:

There are 5! ways to arrange the letters. Each permutation where E comes before I has a pair where E comes after I (namely swap E and I), so the number of permutations where E comes before I is exactly half of it, or 5!/2=60