Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
What should come in place of the question mark (?) in the given series? 4, 10, 28, 82, 244, ?
730
698
680
714
730
Observe that each number is roughly 3 times the previous number plus a decreasing constant or a specific pattern of multiplying by 3 and subtracting 2: (Term * 3) - 2.
Observe that each number is roughly 3 times the previous number plus a decreasing constant or a specific pattern of multiplying by 3 and subtracting 2: (Term * 3) - 2.
Analyze the relationship between terms
Calculate the difference or multiplier: 4 * 3 = 12, 12 - 2 = 10; 10 * 3 = 30, 30 - 2 = 28; 28 * 3 = 84, 84 - 2 = 82; 82 * 3 = 246, 246 - 2 = 244.
Apply the pattern to find the missing term
Following the verified logic (Previous term * 3 - 2), multiply the last term 244 by 3: 244 * 3 = 732. Then subtract 2: 732 - 2 = 730.
B: 698 is the result of incorrect arithmetic logic; C: 680 does not fit the (3x-2) multiplier sequence; D: 714 is derived from a different, invalid arithmetic progression.
A is correct because the series follows a consistent mathematical rule of multiplying the previous term by 3 and subtracting 2 to obtain the next term.
When terms in a series increase rapidly, test multiplication followed by addition or subtraction immediately; this is faster than calculating differences between terms.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants