Answer:
20 dividido por 5 é 4
Eu espero que isso ajude
20 divide by 5 is 4 hope this helps!!!
Answer:
an = a(n-1) - 7
Step-by-step explanation:
the second term is smaller than the first term 7.
a20 = a19 - 7
a19 = a18 - 7
=> a20 = (a18 - 7) - 7
Then you can accumalate until a1
-> a20 = a1 - 19*7 = 86 - 19*7 = -47
The number of permutations of 8 people taken 6 at a time is given by:
Hold on i believe its C but let me go look on google and i'll get back to you to sure