campus Maths Puzzle Numerical Ability Permutation and Combination

Q. The letters of word LABOUR are permutated in all possible ways and the words thus formed are arranged as in a dictionary fashion what is rank of word LABOUR.

Read Solution (Total 5)

5! words starting with A.
5! words starting with B.
Next word starting with L ... LABORU
Next word is LABOUR
so rank of word LABOUR = 120+120+1+1=242
12 years agoHelpfull: Yes(8) No(1)

242

5!+5!+2 = 120+120+2 = 242
12 years agoHelpfull: Yes(3) No(1)
general method to solve these type of questions??
12 years agoHelpfull: Yes(0) No(2)
2!x5!+0+0+0+1*1+0
7 years agoHelpfull: Yes(0) No(0)
A- 5!
B-5!
LABORU- 1
LABOUR-1
Rank is = 120+120+1+1=242
5 years agoHelpfull: Yes(0) No(0)

campus Other Question

Q. There was a big stone of 40 kg in grocery shop by which he used to weight. one day the stone fall down by his helper and break down in to four small pieces. inspite of being angry upon his helper the grocer said him thank you very much.because now he can weight all the weight using these pieces from 1 to 40 kg .find out the weights of four small pieces of stones Q. A five digit number is formed is formed using digits 1,3,5,7 and 9 without repeating any one of them. What is the sum of all such possible numbers ?