Complete the series.
10, 20, 18, 36, 34,68 ________
Identifying the Series Pattern
Observe the relationship between consecutive numbers in the series: 10, 20, 18, 36, 34, 68.
- 10 multiplied by 2 equals 20 (10 × 2 = 20).
- 20 minus 2 equals 18 (20 - 2 = 18).
- 18 multiplied by 2 equals 36 (18 × 2 = 36).
- 36 minus 2 equals 34 (36 - 2 = 34).
- 34 multiplied by 2 equals 68 (34 × 2 = 68).
The pattern involves alternating operations: multiply by 2, then subtract 2.
Calculating the Next Term
The last operation performed was multiplication (34 × 2 = 68). Following the established alternating pattern, the next step is to subtract 2 from the last number.
Calculation: 68 - 2 = 66.
Therefore, the next number in the series is 66.
Conclusion
The correct number to complete the series 10, 20, 18, 36, 34, 68 is 66.
Similar Questions
Which number breaks the pattern?
3, 6, 11, 20, 33, 70
- What should come in place of the question mark '?' in the following number series?
$45, 40, 50, ?, 55, 30$ - Complete the series.
$25, 36, 49, 64, 81, ?$ - What should come at the place of question mark? : $98, 90, 82, 74, ?, 58$
- What should come at the place of question mark? 1, 8, 27, 64, 125, ?, 343
- The series given below contains a sequence of numbers. Accordingly identify the incorrect combination.
5, 9, 27, 31, 94, 97, 292 - Complete the series: 0, 7, 26, 63, ?
- What should come in place of the question mark '?' in the following number series?
12, 6, 0, -6, ?, -18 - What should come at the place of question mark?
3, 7, 14, 24, 37, ? - The series given below contains a sequence of numbers. Accordingly identify the incorrect combination 4, 5, 12, 39, 163
Important Questions from Number Series
What will come in place of question mark (?) in the following number series?
2, 5, 11, 23, 44, 77, ?
What will come in place of question mark (?) in the following number series?
31, 32, 36, ?, 61, 86
What will come in the place of question mark (?) in the following number series?
3, 6, 18, ?, 630, 6930
What should come in place of the question mark ‘?’ in the following number series?
60, 40, 50, ?, 180, 460
A series is given with one term wrong. Select that wrong term from the given alternatives.
J12, M24, P48, S96, U192
