Average of five numbers is 12. If four of the numbers are 19, 16, 13 and 9 then what will be the 5th number ?

Question

The L.C.M and H.C.F of two numbers are 336 and 12 respectively.
If one of the number is 84 then what will be the other number?

Answer 1

19+16+13+9+x=57+x
57+x/5=12
57+x=60
x=3

therefore, the no. is 3

Answer 2

19+16+13+9+3=60/5=12 ,, ans is 3

Answer 3

let the fifth number be x.
we have
(19+16+13+9+x)/5=12
57+x=60
x=3

Answer 4

Let 5 numbers are - x, y, z, a, b

Now their average is :-
(x+y+z+a+b)/5 = 12
19+16+13+9+b = 60
b = 60-57
b = 3

Ans : 3

Answer 5

19+16+13+9 = 57
Avg = 12, So Total = 12*5 = 60

5th Number = 60-57

=**3**