Question

how many 10 digit numbers can be formed by using digits 3 and 5? ​

Answer 1

Answer:

Given:

Given that two expressions are $3$ and $5$

To find:

We need to find the $10$ digit number using these two numerical

Step by step solution:

Step 1 of 1:

Finding the required answers

$10$ digit number has two digits in it

So we have two  $10$ digit numbers,

One number is $35$ and the other is $53$.

Therefore, the required answer are $35$ and $53$.

Answer 2

Answer:

We can find "2¹⁰" 10 digit numbers using digits 3 and 5 ​

Step-by-step explanation:

To solve this question we try to imagine there are 10 chairs in which two friends can sit, and once they sit we mark their place with some chalk. And continuing this process until all the chairs are marked

For friend 1 we mark as "3" and for friend 2 we mark as "5".

Now for every chair we have 2 possibilities

i.e. either friend 1 can sit and mark as "3" or friend 2 can sit and mark as "5"

So, if there are 10 chairs like this then we have 2¹⁰ possible ways.

Similarly, we can find "2¹⁰" 10 digit numbers using digits 3 and 5.​

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