Question

Using all the digits 1 to 9 only one, how many nine digit prime numbers can you write? (A) 1 (B) O 09 (D) More than 100​

Answer 1

Answer:

d, more than hundred

Step-by-step explanation:

it is a using all the digits 1 to 9 only one,nine digit prime numbers

Answer 2

Answer:

Using all the digits 1 to 9 only once

Then the sum of these 9 digit prime number will be

1+2+3+4+5+6+7+8+9= 45

We know that any number whose sum of individual digits is divisible by 3 , can be divided by 3 .

Here 45 is clearly divisible by 3, so irrespective of the orientation of the digits the number will always be divisible by 3.

Therefore there are no prime numbers formed by the digits from 1-9

So the answer is option b) 0