Can u Crack the Logic If 1 1 1 1 = FR Then 6 6 6 6 = ??

Can u CRACK THE LOGIC ...???

If 1 1 1 1= FR
2 2 2 2= ET
3 3 3 3= TE
4 4 4 4= SN
Then
6 6 6 6= ??

Challenge For u
Must reply

Click here for Answer

The Logic is :
1 1 1 1 = Four = FR (First and Last Letter after adding the Numbers
Hence 6 6 6 6 = Twenty Four = TR