TCS Company Numerical Ability Permutation and Combination

7 noun, 5 verbs and 2 adjectives are written on blackboard.we can form sentence by choosing 1 from each available set without caring it makes sense or not.what is the number of ways of doing this??
ans -420

Read Solution (Total 3)

we have to choose one from each set. 1 from 7 nouns and 1 from 5 verbs and 1 from 2 adjectives.
then we have 2 arrange 3 different set in 3! ways.
so,
7c1*5c1*2c1*3!=420
9 years agoHelpfull: Yes(25) No(0)

(7C1 * 5C1 *2C1 ) 3!
7C1 for chosing 1 from 7
5C1 for choosing 1 from 5
2C1 for choosing 1 from 2
now these 3 words can arrange in 3!= 6
so total 7*5*2*6=420
9 years agoHelpfull: Yes(6) No(0)
3!*7c1*5c1*2c1
9 years agoHelpfull: Yes(5) No(1)

TCS Other Question

Find the rank of the word GOOGLE if all the words which can be formed by permuting letters of this word without repitition are arranged in dictionary in alphabetical order???
ans-88 A owe B Rs 250.He agrees to pay B over a number of consecutive days starting from Monday paying single note of Rs 50 or Rs 100 on each day.In how many different ways can A repay B( 2 ways are said to be different if atleast one day a note of different denomination is given)