Elitmus
Exam
Numerical Ability
Permutation and Combination
The number of 6 digit even numbers that can be made from the number 214635 are..
a,360
b,120
c,72
d,18
Read Solution (Total 21)
-
- a) 360
The digits in 214635 are 1,2,3,4,5,6
For an even number, the last digit must be an even number.
Starting from 6th digit,
6th digit can have 2,4 or 6 => 3 numbers
5th digit can have any of remaining numbers => 5 numbers possible
4th digit can have the any of the remaining numbers => 4 numbers possible
3rd digit => 3 numbers possible
2nd digit => 2 numbers possible
1st digit => 1 number possible
Therefore, 3*5*4*3*2*1 = 360 numbers possible
- 10 years agoHelpfull: Yes(54) No(1)
- R u kidding??? this can't be Elitmus question... This is not even AMCAT level question
- 9 years agoHelpfull: Yes(11) No(1)
- A. 360
BECAUSE EVEN NO FORMED BY USING 2,4,6 - 10 years agoHelpfull: Yes(3) No(0)
- Ans. a) 360
for 6 digit even number...
in unit place always 2,4,6 will come..rest of place we can fill any given number, so
solution will be - 5*4*3*2*1*3 = 360. - 10 years agoHelpfull: Yes(3) No(1)
- last digit must be even......so
1*2*3*4*5*3=360
- 10 years agoHelpfull: Yes(2) No(1)
- 1 x 2 x 3 x 4 x 5 x 3 = 360
- 9 years agoHelpfull: Yes(1) No(0)
- option a 360
for unit place 3 digits i.e 2,4,6
for tenth place 5 digit.....
for next place 4 digit
3 digit
2 digit
1 digit
so total numbers=3*5*4*3*2*1=360 - 9 years agoHelpfull: Yes(1) No(0)
- for even
at the end of the no. we can place only 2,4 and 6.
in case of 2
we have total 6 nos in which we have to fix 2 at the end place or unit place
remaining nos can be arranged in 5! way
similarly in case of 4 and 6.
then 5!=120.
we have 3 case
hence 120*3=360.
a) 360 is the right answer - 9 years agoHelpfull: Yes(1) No(0)
- 6!/6 = 120
- 10 years agoHelpfull: Yes(0) No(5)
- 5x4x3x2x1x3=360
- 9 years agoHelpfull: Yes(0) No(0)
- 360.is the ans
- 9 years agoHelpfull: Yes(0) No(0)
- 5*4*3*2*1*3 ways
which is 360. - 9 years agoHelpfull: Yes(0) No(0)
- 360
because Unit place can be fill with three digit it may be 2 4 or 6
renaiming place can be fill 5*4*3*2*1 ways - 9 years agoHelpfull: Yes(0) No(0)
- 360
a number is even if its last digit end with with (0,2,4,6,8).in this case last digit should be 2,4or 6.by using principle of counting first digit can be filled by 5 no. now second by 4 and it goes like that
i.e 5*4*3*2*1*3=360
- 9 years agoHelpfull: Yes(0) No(0)
- very easy there is six palce ---- ---- ---- ---- ---- ----
so last digit can fill with 2,4,or 6 so last digit is 3 ways
so one place is fill now first place can fill 5 ways and then 4 ,3,2,1
so ans is 5 *4*3*2*1*3 =360 - 8 years agoHelpfull: Yes(0) No(0)
- 360
2*4*6*3*5 - 6 years agoHelpfull: Yes(0) No(0)
- 360
2*4*5*6 - 6 years agoHelpfull: Yes(0) No(0)
- 5*4*3*2*3=360
- 6 years agoHelpfull: Yes(0) No(0)
- a) 360
for the no to be even the 6th digit can be either 2,4 or 6 out of all the digits so 5*4*3*2*1*3=360 - 5 years agoHelpfull: Yes(0) No(0)
- option a
fix unit place with an even number and arrange the other places with remaining digits.
so three cases are possible.hence 5!*3 - 3 years agoHelpfull: Yes(0) No(0)
- 3*5*4*3*2*1=360
- 3 years agoHelpfull: Yes(0) No(0)
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