Question

quantos numeros pares de 3 algarismos distintos podemos fo4mar ultilizando apenas os algarismos 1,2,3,4 e5

Answer 1

(112, 114, 122, 124, 132, 134, 142, 144, 152, 154)

(212,214, 222, 224, 232, 234, 242, 244, 252, 254)

(312, 314, 322, 324, 332, 334, 342, 344, 352, 354)

(412, 414, 422, 424, 432, 434, 442, 444, 452, 454)

(512, 514, 522, 524, 532, 534, 542, 544, 552, 554)

5x5x2 = 50