Q. 9
Write the number of ways in which 5 red and 4 white balls can be drawn from a bag containing 10 red and 8 white balls.
Answer :
4 white and 5 red balls are to be selected from 8 white and 10 red balls.
Required number of ways = 8C4
10C5 
= 70 
252
= 17640
Rate this question :
Permutations & Combinations | Analyze your learningFREE Class
Challenging Quiz on P&C | Test Yourself55 mins
Understand Permutations like never before60 mins
Check Your progress Part 2| Interactive Quiz: Permutation & Combination54 mins
Interactive Quiz on Combinations50 mins
Lecture on Combinations49 mins
Interactive Quiz on Division and distribution of objects17 mins
Division and distribution of objects58 mins
Interactive Quiz on Combinations-0253 mins
Circular permutations61 mins
How many different words, each containing 2 vowels and 3 consonants can be formed with 5 vowels and 17 consonants?
RD Sharma - MathematicsA committee of 7 has to be formed from 9 boys and 4 girls. In how many ways can this be done when the committee consists of :
at least 3 girls?
RD Sharma - MathematicsHow many words, with or without meaning can be formed from the letters of the word ‘MONDAY’, assuming that no letter is repeated, if
4 letters are used at a time
RD Sharma - MathematicsA parallelogram is cut by two sets of m lines parallel to its sides. Find the number of parallelograms thus formed.
RD Sharma - MathematicsHow many words, with or without meaning can be formed from the letters of the word ‘MONDAY’, assuming that no letter is repeated, if
all letters are used at a time
RD Sharma - MathematicsOut of 18 points in a plane, no three are in the same straight line except five points which are collinear. How many (i) straight lines (ii) triangles can be formed by joining them?
RD Sharma - Mathematics