Ascent Education Home
• CAT 2008 for IIMs
CAT - Intensive Contact Class @ Chennai
» CAT - Weekend Crash Course
» CAT - Correspondence
• India
• Abroad
» Mock CAT Series
» CAT - Math & DI Boot Camp
» Math Shortcut Workshops
• TANCET 2008 @ Chennai
• TANCET 2008 @ Kovai
• XAT 2008
• GRE-GMAT
• US B Schools
• Faculty List
• Question A Day

Permutation and Combination - Quant/Math - CAT 2009

  1. Algebra
  2. Progressions
  3. Averages
  4. Clocks and Calendars
  5. Data Sufficiency
  6. English Grammar
  7. Function
  8. Geometry
  9. Interest
  10. Mensuration
  11. Mixtures & Alligations
  12. Number System
  13. Percentages
  14. Permutation & Combination
  15. Pipes & Cisterns And Work & Time
  16. Probability
  17. Profit & Loss
  18. Races
  19. Ratio, Proportion
  20. Speed, Time & Distance
  21. Trigonometry
  22. Miscellaneous
  23. General Knowledge
Question 4 the day: March 23, 2004

The question for the day is from the topic Permutation and Combination.
In how many ways can 5 letters be posted in 3 post boxes, if any number of letters can be posted in all of the three post boxes?

(1) 5C3 (2) 5P3
(3) 53 (4) 35
Correct Answer - (4)

Solution:

Explanatory Answer

The first letter can be posted in any of the 3 post boxes. Therefore, it has 3 choices.

Similarly, the second, the third, the fourth and the fifth letter can each be posted in any of the 3 post boxes.

Therefore, the total number of ways the 5 letters can be posted in 3 boxes is 3*3*3*3*3
= 35

Page top        

 
  © 2002 - 08 ASCENT Education all rights reserved.