Verbal Reasoning - Series Completion - Discussion
Discussion Forum : Series Completion - Section 1 (Q.No. 8)
Directions to Solve
Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
8.
6, 13, 25, 51, 101, ?
Answer: Option
Explanation:
The pattern is x 2 + 1, x 2 - 1, x 2 + 1, x 2 - 1,.....
So, missing term = 101 x 2 + 1 = 203.
Discussion:
12 comments Page 1 of 2.
Prabin said:
1 year ago
6*2 + 1 = 13,
13*2-1 = 25,
25*2 + 1 = 51,
51*2 - 1 = 101,
101*2 + 1 = 203.
13*2-1 = 25,
25*2 + 1 = 51,
51*2 - 1 = 101,
101*2 + 1 = 203.
(3)
Tanmay Kamble said:
6 years ago
6+6+1 = 13,
13+13-1 = 25,
25+25+1 = 51,
101 +101-1 = 101,
101+101+1 = 203.
Answer is 203.
13+13-1 = 25,
25+25+1 = 51,
101 +101-1 = 101,
101+101+1 = 203.
Answer is 203.
(8)
Hitesh said:
7 years ago
13-6 = 7,
25-13 = 12(7*2=14)-2 = 12,
51-25 = 26 (12*2) + 2 = 26,
101-51 = 50(26*2 = 52)-2 = 50,
x-101 = 102(50*2 = 100) + 2,
x = 203.
25-13 = 12(7*2=14)-2 = 12,
51-25 = 26 (12*2) + 2 = 26,
101-51 = 50(26*2 = 52)-2 = 50,
x-101 = 102(50*2 = 100) + 2,
x = 203.
Farooq said:
10 years ago
Different ways to solve these type of questions.
(1)
Ankush said:
1 decade ago
How 101?
It should be 51*2+1=103.
It should be 51*2+1=103.
(1)
Rajesh said:
1 decade ago
6, 13, 25, 51, 101..
6,13.
13+(6+6).
25+(13+13).
51+(25+25).
101+(51+51).
= 203.
6,13.
13+(6+6).
25+(13+13).
51+(25+25).
101+(51+51).
= 203.
Meharun said:
1 decade ago
6*2 = 12+1 = 13.
25*2 = 50+1 = 51.
101*2 = 202+1 = 203.
25*2 = 50+1 = 51.
101*2 = 202+1 = 203.
(4)
Deepak said:
1 decade ago
6*2+1=13.
13*2-1=25.
25*2+1=51.
51*2-1=101.
101*2+1=203.
13*2-1=25.
25*2+1=51.
51*2-1=101.
101*2+1=203.
Nirajsingh said:
1 decade ago
Simple for,
13-6 = 7, 7*2 = 14 diff -2.
25-13 = 12 12*2 = 24 diff +2.
51-25 = 26 26*2 = 52 diff -2.
101-51 = 50. So, 50*2 = 100 diff +2 100+2 = 102.
So different between them is -2, +2 so 203-101 = 102.
13-6 = 7, 7*2 = 14 diff -2.
25-13 = 12 12*2 = 24 diff +2.
51-25 = 26 26*2 = 52 diff -2.
101-51 = 50. So, 50*2 = 100 diff +2 100+2 = 102.
So different between them is -2, +2 so 203-101 = 102.
Lavanya said:
1 decade ago
6+6 = 12+1=13
13+13 = 26-1=25
25+25 = 50+1=51
51+51 = 102-1=101
101+101=202+1=203
13+13 = 26-1=25
25+25 = 50+1=51
51+51 = 102-1=101
101+101=202+1=203
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers