5 Views

Question : Directions: Which number from among the given options can replace the question mark (?) in the following series?
361, 306, ?, 208, 165, 126

Option 1: 235

Option 2: 216

Option 3: 298

Option 4: 255


Team Careers360 22nd Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 255


Solution : Given:
361, 306, ?, 208, 165, 126

Decrease the difference between the consecutive numbers by 4 and find the next term of the series –
361 – 55 = 306;
306 – (55 – 4) = 306 – 51 = 255;
255 – (51 – 4) = 255 – 47 = 208;
208 – (47 – 4) = 208 – 43 = 165;
165 – (43 – 4) = 165 – 39 = 126

So, the missing number is 255. Hence, the fourth option is correct.

How to crack SSC CHSL

Candidates can download this e-book to give a boost to thier preparation.

Download Now

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books