Learn

QUESTION
Q
The mean of 50 numbers is 30. Later it was discovered that two entries were wrongly entered as 82 and 13 instead of 28...

Solution

Given mean of 50 numbers = 30 ⇒ sum of the numbers = 30 × 50 = 1500 Sum of wrong entries = 82 + 13 = 95...

Register & Unlock access to Prep for free

Save & Analyse
your Practice

Learn, Practice &
Improve fast

Improve your
Accuracy

Track & Improve
Scores in all Topics

Session Time
Tracker

Review your
Performance

Insights on others
Performance

View Performance
Reports

Achieve your
Target

Flexible Learning &
Practice

Question Time
Tracker

Improve your
exam scores

Solution

.hez-title-solution{display: none;}

Keynote

#hez-keynote-title{display: none;}

Which was the first electronic computer constructed at the Moore School of Engineering ?

|

Find the length of the platform if a train of length 400 m running at a speed of 45 km/hr crosses the platform in 60 seconds.

|

Pavan covers half the distance at a speed of 25km/hr and the remaining distance at a speed of 45 km/hr. Find the approximate average speed…

|||

0 Averages questions available for your Free Practice
0 Quantitative Ability questions available for your Free Practice
Practice 0 questions for Free
Scroll to Top