matriu multiples 3 i 2

 import numpy as np

m=[]

for i in range(0, 104, 3):

    m.append(i)

    

a= np.array(m).reshape(5,7)

print(a)

filas, columnas = a.shape

for fila in range(filas):

    for columna in range(columnas):

        if a[fila, columna] %2 !=0:

            a[fila, columna] = a[fila, columna] -1

        

print(a)