Select the true statement about the series, ¾ + 7/8 + 11/12 + 15/16…
a) the series given is n/n+1, where n is the natural number
b)the series is divergent
c)the series is n+4/s +4 times the sequence, where s and n are natural numbers
d)the series is convergent

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.