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Recent questions tagged permutations_and_combinations
+1
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1
answer
In a staircase, there are 10 steps. A child is attempting to climb the staircase. Each time she can either make 1 step or 2 steps. In how many different ways can she climb the staircase? a) 10 b) 21 c) 36 d) None of these
asked
Jul 20, 2014
in
TCS
by
bhushn
permutations_and_combinations
+2
votes
2
answers
How many vehicle registration plate numbers can be formd with digits 1,2,3,4,5 (no digit being repeated)if it's given that registration number can have 1 to 5 digits ?
asked
Nov 2, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
In how many ways a 11 letter word can be formed where the even places are occupied by vowels and odd places are occupied by consonants?
asked
Nov 2, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
0
answers
AB is a straight line and 10 points are drawn in it. AC another straight 8 points are drwan in it. how many triangle can be made with these points as a vertices?
asked
Nov 2, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
49 members attended the party. In that 22 are males, 27 are females. The shake hands are done between males, females, male and female. Total 12 people given shake hands. How many such kinds of such shake hands are possible?
asked
Nov 1, 2013
in
TCS
by
Campusgate
permutations_and_combinations
+2
votes
1
answer
Figure shows an equilateral triangle of side of length 5 which is divided into several unit triangles. A valid path is a path from the triangle in the top row to the middle triangle in the bottom row such that the adjacent triangles in our path share a common edge and the path never travels up (from a lower row to a higher row) or revisits a triangle. An example is given below. How many such valid paths are there?
asked
Nov 1, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
A student can select one of 6 different math book, one of 3 different chemistry book & one of 4 different science book.In how many different ways students can select book of math, chemistry & science.
asked
Oct 31, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
4 Women & 6 men have to be seated in a row given that no two women can sit together. How many different arrangements are there.
asked
Oct 31, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
what is the sum of all the 4 digit numbers that can be formed using all of the digits 2,3,5 and 7?
asked
Oct 31, 2013
in
TCS
by
Campusgate
permutations_and_combinations
0
votes
1
answer
find the total number of combinations of 5 letters a,b,a,b,b taking some or all at a time?
asked
Oct 31, 2013
in
TCS
by
Campusgate
permutations_and_combinations
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