Explanation:
The score of Sachin in consecutive five innings at 80, 90 ,100, 100 and M respectively.
The average of the five innings is 100.
We need to find the value of M.
Average = sum of observations/total no of observations
Sum of observations = 80+90+100+100+M
= 370 + M
Total no. of observations = 5
Put all the values,

So, he scored 130 in his last innings.
He scored (130-80 = 50) more in his last innings as compared to the first inning scored.
Answer:
It could have been caused due to the discrimination and stereo type upon immigrants.
Explanation:
This shows the rude and discriminating nature about the people in that time.
Answer:
a) A military officer with a high rank or position.
Explanation:
Lieutenant is one of the several positions of leadership, that compose the military career. It is the officer who performs the functions of section chief or fraction commander, and replaces the captain in command of the subunit. In this sense, "lieutenant" is a military officer with a high rank or position.