Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?
Option 1: 1240
Option 2: 2640
Option 3: 1680
Option 4: 2520

Question

Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?

Option 1: 1240

Option 2: 2640

Option 3: 1680

Option 4: 2520

Team Careers360 · Accepted Answer

Correct Answer: 2520

Solution : Given:
1, 7, 42, 210, 840, ?

Let's apply the pattern –
1 × 7 = 7; 7 × 6 = 42; 42 × 5 = 210; 210 × 4 = 840; 840 × 3 = 2520

So, 2520 is the missing number in the series. Hence, the fourth option is correct.

Popular Searches

Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?
Option 1: 1240
Option 2: 2640
Option 3: 1680
Option 4: 2520

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Popular Searches

Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. 1, 7, 42, 210, 840, ?Option 1: 1240Option 2: 2640Option 3: 1680Option 4: 2520

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