How many unique ways are there to arrange the letters in the word PRETTIER?

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29 Jan 2018 Arrangement How many unique ways are there to arrange the letters in the word PRETTIER?: OPtion
1) 630
2) 1260
3) 2520
4) 840
5) 420
6) 1680
7) 660
8) 5040
9) 880
10) None of these; Correct Option: 8 Best Solution (8)

Rajaboina Radhika 6 years AGO

Total no.of letters in the word PRETTIER=8
R,E and T are repeated twice
So, total unique ways to arrrange the letters in the word PRETTIER=8!/2!*2!*2!=5040
hence ans is option (8)

Like? Yes (6) | No (2)

Dr.Dipin Singh 6 years AGO

PRETTIER has 8 letters.
R, E And T are appearing twice.
Hence number of unique ways to arrange letters of PRETTIER =8!/(2!*2!*2!) = 7!=5040

Like? Yes (2) | No (4)

G.S.Kantharao 6 years AGO

No of letters in the word PRETTIER is 8
Repeated R 2 times
E 2 times
T 2 times
Unique way=8!/2!*2!*2!=(8*7*6*5*4*3*2*1)/(2*1*2*1*2*1)=5040
Hence my option is 8👈

Like? Yes (2) | No (5)

AYAN PAUL 6 years AGO

There are total 8 letters in this word so to arrange them uniquely the no of arrangements will be 8!
Now the letter P R and E repeats 2 times
So the final way of arrangement will be
8!/2!*2!*2! = 5040

Like? Yes (1) | No (5)

ARINJOY GHOSH 6 years AGO