Sofia will attend a sequence of daily training sessions for her job.

Question

Sofia will attend a sequence of daily training sessions for her job. On the last day of her training sessions she will attend either 1 session or 2 sessions. On each of the other days of her training sessions she will attend exactly 2 sessions. At the end of her third day of attending training sessions, how many sessions will Sofia have left to attend?

(1) The sequence of training sessions Sofia will attend will last 6 days.

(2) There are a total of 11 training sessions in the sequence of training sessions Sofia will attend.

ID 17498

AbdurRakib · Accepted Answer

Sofia will attend a sequence of daily training sessions for her job. On the last day of her training sessions she will attend either 1 session or 2 sessions. On each of the other days of her training sessions she will attend exactly 2 sessions. At the end of her third day of attending training sessions, how many sessions will Sofia have left to attend?

(1) The sequence of training sessions Sofia will attend will last 6 days ..........>at the end of the 3rd day Sofia will attend exactly 6 session but on other 3 days Sofia may attend 5/6 sessions,since on last day of her training sessions she will attend either 1 session or 2 sessions  Not Sufficient

(2) There are a total of 11 training sessions in the sequence of training sessions Sofia will attend........>this statement specified Sofia will have left to attend 5 sessions because at the end of 3rd day she will attend 6 sessions ,since each day until the last day she will attend exactly 2 sessions. Sufficient

Correct Answer B

hsbinfy · Answer

B

each day 2 session leaving the last day(which can be 1or 2)
no of sessions completed at the end of 3rd day=2+2+2=6

1) says 6 days of session

so total no of sessions can be 12 or 11.

so answer can be 5or 6

2)11 total session

so 11-6=5.suff

B

allezwart · Answer

Took a while to understand the situation. Basically each day she attends 2 trainings, but on the last day it could be 1 or 2 trainings. Question at the end of the 3rd day how many trainings left?

1. 6 days so total could be 12 (6*2) or 11 (5*2) +1)). No Good since two options for how many trainings left after day 3. 
2. 11 total so (5*2) +1). This tells us how many left. Sufficient.

Answer B

TheWrongGrammer · Answer

Hello,
Please correct me if I am wrong, does 
“ (1) The sequence of training sessions Sofia will attend will last 6 days ”
This imply that the session will last 6 days but it is not necessarily true that she will attend all 6?

Posted from my mobile device

sayan640 · Answer

ofia will attend a sequence of daily training sessions for her job. On the last day of her training sessions she will attend either 1 session or 2 sessions. On each of the other days of her training sessions she will attend exactly 2 sessions. At the end of her third day of attending training sessions, how many sessions will Sofia have left to attend?

(1) The sequence of training sessions Sofia will attend will last 6 days.

(2) There are a total of 11 training sessions in the sequence of training sessions Sofia will attend.

This one is very easy.

Training sessions :-

Day1 Day2 Day3 Day4 Day5 Day6 ......

2 2 2 2 2 2/1

From statement 1 , we are not sure about the no. of sessions to atteneded on the last day i.e 6th day . Could be 1 or 2.

Statement 2 :-

2 , 2,2, (2,2,1) as the total no. of sessions is fixed i.e 11.

So he is left with 5 sessions. B is our ans.

GMATinsight

shwetakoshija · Answer

Given: 
• Sofia attends 2 sessions per day on all days except the last day.
• On the last day, she attends either 1 session or 2 sessions.

To Find:  The number of remaining sessions after 3 days of training.

Statement 1:  The training lasts for 6 days.
• First 5 days: Since each of the first 5 days has exactly 2 sessions, these contribute: 5 × 2 = 10 sessions.
• Last day: She could attend either 1 or 2 sessions, meaning total sessions could be 11 or 12.
• After 3 days, she has already attended: 3 × 2 = 6 sessions. 
• Remaining sessions = (11 or 12) – 6 =  5 or 6  sessions

Statement 1 alone is insufficient.

Statement 2:  There are 11 total sessions.
• 11 sessions can only be done in more than 5 days. So, we are sure that she does 2 sessions each day for the first 3 days. 
• After 3 days, she has attended: 3 × 2 = 6 sessions.
• Remaining sessions: 11 – 6 = 5

Statement 2 alone is sufficient.

Correct Answer: B

bumpbot · Answer

Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.

Sofia will attend a sequence of daily training sessions for her job.

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Data Sufficiency (DS) Questions

Sofia will attend a sequence of daily training sessions for her job.

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards