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 тАШ?тАЩ in the given series? 47 54 63 70 79 ?
88
83
86
84
86
Observe the alternating difference pattern: +7, +9, +7, +9, which implies the next jump should follow this cycle.
Observe the alternating difference pattern: +7, +9, +7, +9, which implies the next jump should follow this cycle.
Analyze the series differences
Calculate the difference between consecutive terms: 54 - 47 = 7, 63 - 54 = 9, 70 - 63 = 7, 79 - 70 = 9.
Identify the repeating sequence
The differences follow a pattern of +7 and +9. Since the last operation was 70 + 9 = 79, the next operation must be 79 + 7.
Calculate the final term
Following the pattern: 79 + 7 = 86.
A: 88 is incorrect as it implies an inconsistent jump of 9; B: 83 is incorrect as it results from a wrong addition logic (+4); D: 84 is incorrect as it does not follow the established +7/+9 sequence.
C is correct because the series follows an alternating addition pattern of +7 and +9, and adding 7 to 79 results in 86.
In number series, always calculate the first differences. If the differences don't show a clear pattern, check for second-order differences or alternating sequences.
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