Question 61

Amit Kumar got a 4-digit pass code (which is formed out of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9) of his ATM card from ICICI Bank. But after the 50th day he lost the pass code and also forgot the number. How many maximum number of trials may he have to take to get the right number? 0 can be the beginning of the code number.

Solution

Since it is a 4 digit pass code, so

1st digit : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, can be any of the following. So 10 ways

2nd digit : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, can be any of the following. So 10 ways

3rd digit : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, can be any of the following. So 10 ways

4th digit : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, can be any of the following. So 10 ways

So, 10^4 ways.

View More Questions From Quant

Create a FREE account and get:

All Quant Formulas and Shortcuts PDF
100+ previous papers with solutions PDF
Top 5000+ MBA exam Solved Questions for Free

maruti sir image

MAT Quant Questions | MAT Quantitative Ability

MAT Simple Interest Compound Interest Questions MAT Time Speed Distance Questions MAT Venn Diagrams Questions MAT Time, Speed and Distance Questions MAT Number Series Questions MAT Number Systems Questions MAT Arithmetic Questions MAT Coordinate Geometry Questions MAT Data Sufficiency Questions MAT Inequalities Questions MAT Progressions and Series Questions MAT Averages, Ratio and Proportion Questions MAT Probability, Combinatorics Questions MAT Remainders Questions MAT Profit And Loss Questions MAT Averages Mixtures Alligations Questions MAT Linear Equations Questions MAT Logarithms, Surds and Indices Questions MAT Profit and Loss Questions MAT Percentages Questions MAT Quadratic Equations Questions MAT Time And Work Questions MAT Averages Questions MAT Geometry Questions MAT Mensuration Questions MAT Functions, Graphs and Statistics Questions MAT Algebra Questions MAT Logarithms Questions

MAT DILR Questions | LRDI Questions For MAT

MAT Scheduling Questions MAT DI Miscellaneous Questions MAT Quant Based LR Questions MAT Games and Tournamnents Questions MAT Data Interpretation Basics Questions MAT Data Interpretation Questions MAT Table based DI Sets Questions MAT Truth Lie Concept Questions MAT Coins and Weights Questions MAT Special Charts Questions MAT Venn Diagrams Questions MAT Charts Questions MAT Miscellaneous LR Questions MAT Quant Based DI Questions MAT Selection With Condition Questions MAT Arrangement Questions MAT Data change over a period Questions MAT Routes And Networks Questions MAT Maxima-Minima Questions MAT 2D & 3D LR Questions MAT Puzzles Questions MAT DI with connected data sets Questions

MAT Verbal Ability Questions | VARC Questions For MAT

MAT Odd One Out Questions MAT Critical Reasoning Questions MAT Reading Comprehension Questions MAT Para Jumbles Questions MAT Vocabulary Questions MAT Grammar and Sentence Correction Questions MAT Miscellaneous Questions MAT Verbal Ability Questions MAT Para Summary Questions