Question : Directions: 20 is related to 30 following a certain logic. Following the same logic, 42 is related to 56. To which of the following is 72 related, following the same logic?
Option 1: 94
Option 2: 92
Option 3: 88
Option 4: 90
New: SSC CHSL Tier 2 answer key released | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: 90
Solution :
Given:
20 is related to 30 and 42 is related to 56.
The first term is n(n – 1) and the second term is n(n + 1).
Like, 20 is related to 30→5 × (5 – 1) = 5 × 4 = 20; 5 × (5 + 1) = 5 × 6 = 30
And, 42 is related to 56→7 × (7 – 1) = 7 × 6 = 42; 7 × (7 + 1) = 7 × 8 = 56
Similarly, follow the same pattern for 72→9 × (9 – 1) = 9 × 8 = 72; 9 × (9 + 1) = 9 × 10 = 90
Thus, 72 is related to 90. Hence, the fourth option is correct.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates Brochure
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
