Latest TCS Aptitude Question SOLUTION: How many 3 digits with 3 Distinct digits are there from 100-1000.

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(#M40009388) TCS Numerical Ability question Keep an EYE

How many 3 digits with 3 Distinct digits are there from 100-1000.

Asked In TCS Vignesh (12 years ago)

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Read Solution (4) :

Pargat Pal Singh  (12 years ago)

9*9*8 = 648 numbers

Is this solution Helpfull? Yes (12) | No (3)  

Shiv Kumar  (12 years ago)

BY using the Fundamental Counting Principle.
For the hundreds column, you only have a choice of 9 numbers (i.e. Digits 1 through 9.
The next column can have any of the remaining 9 digits from 0 through 9 that were not already chosen.
Since 2 of the digits were already used, the third spot can have any of the remaining 8 unused digits.

So No.of Distinct Digits are 9 x 9 x 8 = 648

Is this solution Helpfull? Yes (7) | No (1)  

priya   (9 years ago)

9*9*8=648 is the answer

Is this solution Helpfull? Yes (1) | No (1)  

Aravind Kumar  (9 years ago)

9*9*8 = 648

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