The number of ways in which '4' pairs of paranthesis be arranged so that every arrangement is matched is:

Number of ways in which the letters of the word TAMANNA be arranged is

Number of ways in which the letters of the word TAMANNA be arranged is

The number of ways in which 8 examination papers be arranged so that the best and worst papers never come together is

The number of ways in which the letters of the word ARTICLE can be arranged so that even places are always occupied by consonants is

The number of ways in which the letters of ‘ARRANGE' be arranged so that Two R's come together is

If lambda be the number of ways in which 6 boysand 5 girls can be arranged in a line so that they are alternate,then lambda is divisible by

The number of ways in which 6 men can be arranged in a row so that the particular 3men sit together,is:

The number of ways in which the letters of the word 'INSURANCE' be arranged so that the vowels are never separated is

The number of ways in which n books can be arranged so that two particular books are not together is