Answer:
<h2>20</h2>
Step-by-step explanation:

Answer:a) 870
b) 435
Step-by-step explanation:
a)
number of photos to be posted =n = 30
number of web pages on which they would be posted is 2
Since the order in which the photos appear on the web pages matters,
Number of ways = 30 permutation 2
=870 ways
b)
Since the order in which the photos appear on the web pages does not matter,
Number of ways = 30 combination 2
= 435 ways
-6 minus 6=0 i think it is correct
D, he is moving at a constant spees
Answer:
Step-by-step explanation:
mm = 1357
m = 1.357
cm = 135.7