Question

tell the answer please​

Answer 1

Answer:

700

Step-by-step explanation:

Answer 2

Here we have to find the missing number

Let the missing number be x

So, the series will be 5, 15, 45, 135, x, 1215, 3645

Now, in this series, every number is 3 times its preceding number

For example: 15 is three times of 5

                       45 is 3 times  15

                        135 is three times  45

Similarly, x will be three times  135

So, x = 3 × 135

         = 405

Hence, the missing number will be 405