The different is that 21 is going ALL the way down to 21 while 4 is only going to 4..
45 handshakes are possible
Answer:
19
Step-by-step explanation:
16+3=19 the key word total means you add
Answer:
it is five
Step-by-step explanation:
5v-2=8 then v=x2 because 5x2=10-2=8
so 7v-9=5
