Question
Complete the number pattern.
 (a)             , 7638, 7548, 7458, (b)             , 7278
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Complete the number pattern.
 (a)             , 7638, 7548, 7458, (b)             , 7278