Question by falcon handsome

31/03/2017 at 17:35

(a) How many such numbers are there?

(b) How many of these numbers are even?

Futeruno Kanzuki Coordinator 31/03/2017 at 20:15

a) There are :7 x 7 x 6 x 5 = 1470 numbers

b) There are :4 x 4 x 3 x 2 = 96 even numbers
FA KAKALOTS 09/02/2018 at 21:45

a) There are :7 x 7 x 6 x 5 = 1470 numbers

b) There are :4 x 4 x 3 x 2 = 96 even numbers
Kokone 04/04/2017 at 14:18

a) There are :7 x 7 x 6 x 5 = 1470 numbers

b) There are :4 x 4 x 3 x 2 = 96 even numbers
Lê Nho Khoa 02/04/2017 at 21:53

a) There are :7 x 7 x 6 x 5 = 1470 numbers

b) There are :4 x 4 x 3 x 2 = 96 even numbers