a) ( 99 - 18 ) : 9 + 1 = 10x: 18; 27; 36; 45; 54; 63; 72; 81; 90; 99

b) ( 97- 12 ) : 5 + 1= 18x: 12; 17; 22; 27; 32; 37; 42; 47; 52; 57; 62;67; 72; 77; 82; 87; 92; 97

Choose the word in each group that has the underlined part pronounced differently from the rest.

A. unknown

B. united

C. universe

D. univers