Question 1: The least common multiple of 4 and 10 is: a) 5
b) 20
c) 10
d) 12
Question 2: The LCM of 3, 8 and 12 is:
a) 24
b) 12
c) 36
d) 100
Question 3: Which of the following is NOT true about prime numbers?
a) They have exactly two factors
b) 1 is a factor of every prime number
c) No prime number have its ones digit zero.
d) All prime numbers are odd numbers.

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct