Dado el conjunto A={a, b,c, d} ¿Cuál es el número de variaciones de diferentes letras que podemos hacer?

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

d no solution

step-by-step explanation: