4 Views

Question : Directions: Select the number that can replace the question mark (?) in the following series.
1, 1, 2, 3, 7, 22, ?

Option 1: 157

Option 2: 156

Option 3: 155

Option 4: 152


Team Careers360 19th Jan, 2024
Answer (1)
Team Careers360 21st Jan, 2024

Correct Answer: 155


Solution : Given:
1, 1, 2, 3, 7, 22, ?

Multiply the first two terms and then add 1 to obtain the third term and follow the same pattern for the next term.
(1 × 1) + 1 = 2; (1 × 2) + 1 = 3; (2 × 3) + 1 = 7; (3 × 7) + 1 = 22; (7 × 22) + 1 = 155

So, 155 is the required term in the given series. Hence, the third option is correct.

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