Please enter the following details
Free Daily Targets & Mocks
Study Material & Formulas PDFs
1 on 1 Mentorship
Question 81
How many three digit positive integers, with digits x, y and z in the hundred's, ten's and unit's place respectively, exist such that x < y, z < y and x $$\neq$$ 0 ?
Solution
x, y and z in the hundred's, ten's and unit's place. So y should start from 2
If y=2 , possible values of x=1 and z = 0,1 .So 2 cases 120,121.
Also if y=3 , possible values of x=1,2 and z=0,1,2.
Here 6 three digit nos. possible .
Similarly for next cases would be 3*4=12,4*5=20,5*6=30,.....,8*9=72 . Adding all we get 240 cases.
Video Solution
Your Doubts
Ask a Doubt
(know more)
Drop Your File Here!
Ask Your Doubt
Drop Your File Here!
Create a FREE account and get:
- All Quant CAT complete Formulas and shortcuts PDF
- 38+ CAT previous year papers with video solutions PDF
- 5000+ Topic-wise Previous year CAT Solved Questions for Free
CAT Quant Questions | CAT Quantitative Ability
CAT Number Systems QuestionsCAT Probability, Combinatorics QuestionsCAT Linear Equations QuestionsCAT Averages, Ratio and Proportion QuestionsCAT Algebra Questions
CAT DILR Questions | LRDI Questions For CAT
CAT Selection With Condition QuestionsCAT Data change over a period QuestionsCAT Arrangement QuestionsCAT 2D & 3D LR QuestionsCAT Venn Diagrams Questions
