Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series.
80, 73, 64, 53, 40, ?
Option 1: 19
Option 2: 25
Option 3: 33
Option 4: 23
Latest: SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
Correct Answer: 25
Solution :
Given:
80, 73, 64, 53, 40, ?
In the above-given series, subtract consecutive odd numbers, starting from 7 to the previous number to get the next number.
80 – 7 = 73; 73 – 9 = 64; 64 – 11 = 53; 53 – 13 = 40; 40 – 15 = 25
So, 25 is the missing number of the series. Hence, the second option is correct.
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Answer Key | Eligibility | Application | Selection Process | Preparation Tips | Result | Admit Card
Get Updates Brochure
Your Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.
