(1) Repetition allowed : There are 4 choices for both positions, so 4 × 4 = 16 2-digit numbers can be formed. (2) Repetition not allowed : There are 4 options for tens position, and three options for ones position. Therefore, 4 × 3 = 12 2-digit numbers can be formed.
Answer:
gsjdudvegdiddbdb
Step-by-step explanation:
njshsuebsbhssnshssje
Answer:
What?????/
Step-by-step explanation:
Answer:
x=330
Step-by-step explanation:
x+10=340
-10
x=330
