Question
A task force of 9 members is to be selected from a group
of 8 male and 6 female officers. In how many ways can a task force be formed if it must contain at least 7 male officers?Solution
Case I: 7 males and 2 females
Number of ways = 8C7 × 6C2 = 8 × 15 = 120 ways
Case II: 8 males and 1 female
Number of ways = 8C8 × 6C1 = 1 × 6 = 6 ways
Total number of ways = 120 + 6 = 126 ways
If the code for BRUSHING is SHRUBlNG then what will be the code for SLEEPING?
If ‘as’ is written as ‘sa’, ‘I’ is written as ‘ma’ and ‘done’ is written as ‘na’, how will be ‘Do not say’ written as in th...
How many such pairs of letters are there in the word ‘ COMPLICATION , each of which has many letters between them in the word as they have between...
In a certain code language ‘GRACE’ is written as ‘FQBBF’ and ‘STARE’ is written as ‘RSBQF’. How is ‘STUMP’ written in that code? �...
In a certain code language, ‘ PLANT ’ is coded as '85139' and 'DEEP’ is coded as ‘2668’ . How will ‘DEPEND’ be coded in that language?
...In a certain code language, ‘FINE is written as ‘G23D’ and ‘KITE’ is written as ‘L29D’. How will ‘HOME’ be written in that language?
If ‘PARADISE’ is coded as ‘12’, ‘SULPHUR’ is coded as ‘11’, then what is the code for ‘LOADED’ in the same code language?
...In a certain code language, 'MAGIC' is coded as 'PZJHF' and 'TOPPER' is coded as 'WNSOHQ'. How will ‘HANGER’ be coded in that language?
What will be the code for ‘S?33 Y?8 K&13’ in the given code language?
In a certain code language, 'HOOK' is coded as '19' and 'MAID' is coded as '17'. How will 'PEAR' be coded in that language?
Relevant for Exams:
