Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 1410:00 AM EST
-12:00 PM EST
Think a 100% GMAT Verbal score is out of your reach? Target Test Prep will make you think again! Our course uses techniques such as topical study and spaced repetition to maximize knowledge retention and make studying simple and fun.
Dec 1411:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.
Dec 1310:00 AM EST
-12:00 PM EST
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.- Dec 15
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!- Dec 17
09:00 AM PST
-10:00 AM PST
Join Manhattan Prep instructor Whitney Garner for a fun—and thorough—review of logic-based (non-math) problems, with a particular emphasis on Data Sufficiency and Two-Parts. - Dec 18
10:00 AM PST
-11:00 AM PST
Here is the essential guide to securing scholarships as an MBA student! In this video, we explore the various types of scholarships available, including need-based and merit-based options.
25 Jun 2019, 03:00
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
70% (03:00) correct
30%
(03:08)
wrong
based on 125
sessions
History
Date
Time
Result
Not Attempted Yet
The roll numbers of students in a college are alpha-numeric sequences of 6 characters. The first and fourth characters are letters while the other four are non-zero digits. While the first character is a vowel, the fourth is a letter from a to e (both inclusive). The second character is 2 and the third is a multiple of 2. The sixth character is 5 more than the fifth. How many roll numbers can be formed?
A. 200
B. 240
C. 300
D. 360
E. 400
A. 200
B. 240
C. 300
D. 360
E. 400
25 Jun 2019, 05:43
Kudos
Bookmarks
Bunuel
The roll numbers of students in a college are alpha-numeric sequences of 6 characters. The first and fourth characters are letters while the other four are non-zero digits. While the first character is a vowel, the fourth is a letter from a to e (both inclusive). The second character is 2 and the third is a multiple of 2. The sixth character is 5 more than the fifth. How many roll numbers can be formed?
A. 200
B. 240
C. 300
D. 360
E. 400
A. 200
B. 240
C. 300
D. 360
E. 400
1st letter should be a vowel --> Number of ways = 5 {a, e, i, o, u}
4th is a letter from a to e --> Number of ways = 5 {a, b, c, d, e}
2nd character is 2 --> Number of ways = 1 {2}
3rd is a multiple of 2 --> Number of ways = 4 {2, 4, 6, 8} Non Zero Digits!!
6th character is 5 more than 5th --> Possible combinations are {16, 27, 38, 49} --> Number of ways of selecting 5&6 together = 4
So, total number of ways = 5*5*1*4*4 = 400
IMO Option E
Pls Hit Kudos if you like the solution
26 Jun 2019, 03:06
Kudos
Bookmarks
given its a 6 character alpha numeric sequence
so
first = a,e,i,o,u ; 5
2nd = 2; 1
3rd=2,4,6,8 ; 4
4th = a,b,c,d,e; 5
5th & 6th has to be non zero ; 16,27,38,49 ; 4 possible
total cases possible ; 5*1*4*5*4 ; 400 IMO E
so
first = a,e,i,o,u ; 5
2nd = 2; 1
3rd=2,4,6,8 ; 4
4th = a,b,c,d,e; 5
5th & 6th has to be non zero ; 16,27,38,49 ; 4 possible
total cases possible ; 5*1*4*5*4 ; 400 IMO E
Bunuel
The roll numbers of students in a college are alpha-numeric sequences of 6 characters. The first and fourth characters are letters while the other four are non-zero digits. While the first character is a vowel, the fourth is a letter from a to e (both inclusive). The second character is 2 and the third is a multiple of 2. The sixth character is 5 more than the fifth. How many roll numbers can be formed?
A. 200
B. 240
C. 300
D. 360
E. 400
A. 200
B. 240
C. 300
D. 360
E. 400
