A series is given with one term missimg. -40, -81, -164, -329, -660, -1321, ?
A series is given with one term missimg. Select the correct alternative from the given ones that will complete the series.
एक श्रृंखला दी गई है जिसमें से एक पद लुप्त है। दिए गए विकल्पों में से सही विकल्प का चयन कीजिए जो इस श्रृंखला को पूरा करेगा।
-40, -81, -164, -329, -660, -1321, ?
Detailed Solution & Logic
Correct Answer:
-2644
Solution
Series:
-40, -81, -164, -329, -660, -1321, ?
Check the pattern carefully:
- $-40 \times 2 -1 = -81$
- $-81 \times 2 -2 = -164$
- $-164 \times 2 -1 = -329$
- $-329 \times 2 -2 = -660$
- $-660 \times 2 -1 = -1321$
Pattern: multiply by 2 and subtract alternately:
$-1,,-2,,-1,,-2,\dots$
Now find the next term:
$-1321 \times 2 -2$
= -2642 -2
= -2644
✅ Missing term = -2644
Similar Practice Questions
Select the letter – cluster from among the given options that can replace the question mark (?) in the following series:
Select the letter – cluster from among the given options that can replace the question...
In each of the following questions a number series
In each of the following questions a number series is given. Only one number in...
What should come in place of the question mark (?) in the given series?
What should come in place of the question mark (?) in the given series? दी...
Select the letter-cluster from among the given options that can replace
Select the letter-cluster from among the given options that can replace the question mark (?)...
What should come in place of the question mark (?) in the given series?3 13 28 48 ? 103
What should come in place of the question mark (?) in the given series? दिए...
“Select the figure that will come in place of the question mark (?) in the following figure series.”
“Select the figure that will come in place of the question mark (?) in the...
Which letter-number group from the following will logically complete the given series by replacing the question mark (?)
Which letter-number group from the following will logically complete the given series by replacing the...