Question

quantos números de 2 algarismos podem ser formados usando os números 3,4,5,6 e 7?

Answer 1

Resposta:

(3) ( 13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93)

(4) (14,24,34,40,41,42,43,44,45,46,47,48,49,54,64,74,84,94)

(5) (15,25,35,45,50,51,52,53,54,55,56,57,58,59,65,75,85,95)

(6) (16,26,36,46,56,60,61,62,73,64,65,66,67,68,69,76,86,96)

(7) (17,27,37,57,57,67,70,71,72,73,74,75,76,77,78,79,87,97,)