Loader

MBA Entrance Exams / #CMAT

April 05, 2018 @ 06:03 PM

desktop image
mobile image

April 05, 2018 @ 06:03 PM

Important Problems on Progression

 Published : Friday, 18 July, 2014 01:06 PM
 
MBA aspirants who are appearing in CMAT First Test  being conducted from 25th September to 29th September 2014  may find following useful for practice:
 
Progressions: Finding Common Difference of an AP
 
Question 
Sum of first 25 terms of an AP is 525; sum of the next 25 terms is 725; what is the common difference?
 
1.8/25
2.4/25
3.6/25
4.1/5
 
Answer
 
Correct Choice is (1) and Correct Answer is 8/25
 
Explanatory Answer
 
The sum of the first 25 terms, S25 = 525
The sum of the next 25 terms, K25 = sum of next 25 terms = 725
a26 = a1 + 25d
a27 = a2 + 25d
K25 = a26 + a27 + ...... + a50
Or K25 = a1 + 25d + a2 + 25d + ...... + a25+ 25d
Or K25 = a1 + a2 + ...... + a25+ 25(25d)
Or K25 = S25 + 25(25d)
i.e., 725 = 525 + 25 x 25d
200 = 25 x 25d 
8 = 25d
d = 8/25
 
Stay informed, Stay ahead and stay inspired with MBA Rendezvous 

Crucial Dates, You Should not Miss

Manav Rachna International Institute
of Research

Admissions Open for all MBA programme at Manav Rachna International Institute of
Research and Studies.
GITAM School of International Business, Visakhapatnam
Admissions open for MBA programmes at GITAM. Application Deadline is April 15, 2018
K J Somaiya Institute of Management Studies and Research
SIMSR - Admissions Open for Part Time MBA
Institute of Public Enterprise, Hyderabad
Last Date to Apply for IPE, Hyderabad is 30 April, 2018
Birla Global University
Admission 2018 Open for MBA at Birla Global University