When four coins are tossed simultaneously, in _______ number of the outcomes at most two of the coins will turn up as heads.
A. 17
B. 28
C. 11
D. 43
Answer:C
When four coins are tossed simultaneously, in _______ number of the outcomes at most two of the coins will turn up as heads.
A. 17
 B. 28
 C. 11
 D. 43
