Find The Value Of The Missing Numbers In The Equation: 6 3 7 9 = ? ? ? ?

If you observe the given numbers you will notice that the result on right hand side is the number of letters in the spelling of the digits.

2 2 2 4 = (Two)(Two)(Two)(Four) = 3 3 3 4

Similarly;

3 1 2 1 = (Three) (One) (Two) (One) = 5 3 3 3

&

3 1 2 3 = (Three) (One) (Two) (Three) = 5 3 3 5

So to find the missing numbers;

6 3 7 9 = (Six) (Three) (Seven) (Nine) = 3 5 5 4

Answer: 6 3 7 9 = 3 5 5 4