The sum 196 + 197 + 198 is divisible by
198 is divisible by:
Find the values of (i) (82)2−(18)2 (ii) (128)2−(72)2 (iii) 197×203 (iv) 198×198−102×10296 (v) (14.7×15.3) (vi) (8.63)2−(1.37)2