In how many ways can the letters in PRECISION be arranged? In how many of these arrangements do the vowels occupy even places ?
Choose one.
A) 1140
B) 1440
C) 1420
D) 1460
E) 1520
4 vowels out of which two are identical can be arranged in even places in 4!/2!=12 # of ways.   Remaining 5 letters can be arranged in 5!=120 # of ways.   Total 12*120= 
<gadget id="calculator">12*120</gadget>
<output>1_440</output>
1440.   ans:1440
<result>B</result>
In how many ways can the letters in PRECISION be arranged? In how many of these arrangements do the vowels occupy even places ?