Answer:
Prime numbers only have two factors which is 1 and itself so the HCF of a prime number is itself.
LCM of prime numbers is like the LCM of any other number. See where the lowest multiple of both prime numbers are equal.
Hope this helps.
All plots correctly show the range, 5–73.
The 1st, 2nd, and 4th choices correctly show the median, 54.
Of those, the 2nd and 4th choices correctly show the first quartile, 14.
Of those, only the 2nd choice correctly shows the third quartile, 61.
_____
There are an odd number of data points, so the middle one is the median. That value divides the remaining points in to two groups of 5. That number is also odd, so its median is the middle of that group. If we use x for the lower half and y for the upper half, you have
... (5 x 14 x x) 54 (y y 61 y 73)
Average speed=Total Distance Covered\<span>Total time take<span>n
T.D=240+180=420
T.T=2.5+2=4.5
420\4.5=93.3 km\h
answer=D</span></span>