Question

îmi trebuie va rog frumos repede că dau multe puncte
dau coroana
faceți cat de multe puteti​

Answer 1

Răspuns:

3ⁿ⁺²+3nⁿ⁺¹=36

100100₍₂₎=36

3ⁿ⁺¹(3+1)=36

3ⁿ⁺¹=36:4

3ⁿ⁺¹=9

3ⁿ⁺¹=3²

n+1=2=>n=2-1=>n=1

______________

abc+ab+a=283

100a+10b+c+10a+b+a=283

111a+11b+c=283

a ≤ 2 =>a=1, 2

a=1

111+11b+c=283=>11b+c=283-111=>11b+c=172 nu convine

a=2

222+11b+c=283=>11b+c=61

b ≤ 5=>b=0, 1, 2, 3, 4, 5

dam solutii lui b

b=5

11×5+c=61=>c=61-55=>c=6

abc=256