Question
Complete the number pattern.

(a)           , 3915, 3615, (b)           , 3015, 2715
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)           , 3915, 3615, (b)           , 3015, 2715