Question

5, 11, 35, 143, 719, ?
​

Answer 1

The answer is "4319"

Step-by-step explanation:

The given numbers are 5,11,35,143,719

The numbers are in the following sequences

(5*2)+1= 10+1 = 11.

(11*3)+2= 33+2= 35.

(35*4)+3= 140+3= 143.

(143*5)+4= 715+4= 719.

Therefore the next number is

(719*6)+5= 4314+5= 4319.

Then the sequence is 5,11,35,719,4319,....

Answer 2

Step-by-step explanation:

Given:

$5, 11, 35, 143, 719, ?$

To find:

The next number in the series $5, 11, 35, 143, 719, ?$

Solution:

$5, 11, 35, 143, 719$

In the given series the starting number is $5$ and the next number is $11.$ We can start our answer from this.

Now multiply $5$ by $2$ and add by $1$,

⇒ $5$ × $2+1=11$

Here multiply $11$ by $3$ and add by $2$,

⇒ $11$ × $3+2=35$

Now multiply $35$ by $4$ and add by $3$,

⇒ $35$ × $4+3=143$

Here multiply the $143$ by $5$ and add by $4$,

⇒ $143$ × $5+4=719$

From the above, we can see that the multiplication number and the added number increase by one by one for each and every step.

Therefore multiply $719$ by $6$ and add by $5$,

⇒ $719$ × $6+5=4319$

The given series goes like this.

Hence the next number in the series is $4319.$

∴ The series is,

$5, 11, 35, 143, 719,4319$

Answer:

The next number in the series $5, 11, 35, 143, 719$ is $4319.$