Question

If 13z4 is a multiple of 3 where Z isa digit what might be the value of Z ?

Answer 1

Step-by-step explanation:

to find that 13z4 is a multiple of 3 means add the digits

1+3+z+4=3

8+z=3

z=3-8

z=-5

the value should not end with negative number

so,

try with multiple of 3(3×2=6)

1+3+z+4=6

8+z=6

z=6-8

z=-2

again the value ends with negative so try again with 9(3×3=9)

1+3+z+4=9

8+z=9

z=9-8

z=1

lets check weather it is a multiple of 3, 1+3+1+4=9(3×3=9)

so, the value of z=1

i hope it is helpful