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12 Maths -- Permutation and Combination

1. Which one of the following is the nth term of the series 1+(1+2)+(1+2+3)+.................

In a certain election, there are four candidates for president, six for secretary and only two for treasurer. In how many ways the election may turn out?

How many numbers of two different digits can be formed from the digits 1, 2, 3, 4 and 5? 

How many numbers of three different digits less than 500 can be formed from the integers 1, 2, 3,4,5,6? 

 How many even numbers of different digits can be formed using all the digits 2, 3, 4, 5, 6? 

5. How many numbers of three different digits less than 500 can be formed from the integers 1, 2, 3,4,5,6? 

How many number of 5 digits can be formed from the numbers 2, 0, 4, 3, 8 when repetition of digits is not allowed? 

10 buses run between Kathmandu and butwal. In how many ways a man travel from Kathmandu to butwal and return by different bus?

How many numbers of two digits can be formed from digits 1,2,3,4,5?

How many license plates of 4 different digits can be made from the integers 5,6,7,8,9?

In how many ways the letters of word "ALGEBRA" be arranged?

The value of P(n, n-1) is

In how many ways letter 3 can be posted in 4 letter boxes ?

In how many ways can 5 different coloured beads be strung on necklace?

The number of ways in which 6 different prizes can be distributed among 5 students is

In how many ways can 5 boys and 5 girls sit on a circle so that no two boys sit together 

The number of ways that 8 beads of different colours be string as a necklace is 

In less than or equal to constraints, the non negative variable that is used to balance both side is 

In simplex method, the basic feasible solution must satisfy

The entry in the simplex tableau in the entering variable column and the departing variable row is

Which one of the following entities are to be determined in the solution of LPP?

The entering variable column in a simplex table is determined by 

 The entry in the simplex table common to entering and departing variables both is a 

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