Latest Infosys Aptitude Question SOLUTION: Make a car no of 4digit.First two digits will be letters next two are no. Repetition are not allowed?

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(#M40024480) INFOSYS Numerical Ability question Keep an EYE

Make a car no of 4digit.First two digits will be letters next two are no. Repetition are not allowed?

Asked In Infosys asxa asxaxax (10 years ago)

Unsolved Read Solution (7)

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Read Solution (7) :

S.P Parmar  (10 years ago)

ans will be
26*25*10*9
because there are 26 letters and 0 to 9 i.e 10 digits but repetion not allowed so at 1st position 26 letter,2nd 25 then 3rd 10 digits(0 to 9),4th place 9

Is this solution Helpfull? Yes (38) | No (1)  

Nishant Kumar  (10 years ago)

26c2*2!*10c2*2!

Is this solution Helpfull? Yes (2) | No (5)  

Rupali Rastogi  (10 years ago)

i think ans is.26p2 ×10p2.
bcz dere r 26 alphabets so no of ways=26p2
n similarly dere r 10 digits(0 to 9)so no of ways=10p2.hence total noof ways to make a 4 digit named car=26p2× 10p2.

Is this solution Helpfull? Yes (1) | No (2)  

nithya  (10 years ago)

can you pl explain it nishanth kumar?

Is this solution Helpfull? Yes | No (1)  

Neelang mishra  (7 years ago)

26*25*11*10

Is this solution Helpfull? Yes | No (4)  

Govind Kumar Sharma  (7 years ago)

Here we are going to arrange 4 digits in such a way that the first 2 are alphabets and the remaining 2 are digits
now total combinations that can be made through the alphabets will be (26 for first place and 25 for second place) ie 26*25
lly total possible combinations from numbers will be 9*8
hence total 4 digit numbers can be 26*25*9*8= 46800

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mounika  (6 years ago)

26*25*10*9

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