Los números de teléfonos celulares constan de 10 dígitos, ¿cuántos números diferentes se pueden tener si el primer dígito no debe ser 0, 2 ni 4 y el segundo 4, 6 ni 8?

There are 49,000,00,000 possible numbers.

49,000,00,000 números diferentes posibles.

Step-by-step explanation:

If we have n trials, each with m possible outcomes, the total number of possible outcomes is:

In this question:

The first two trials(numbers), 3 digits are not possible in each. So 7 are possible.

The last eight numbers, all 10 digits are possible.

Then

There are 49,000,00,000 possible numbers.

49,000,00,000 números diferentes posibles.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question