Question
The excess of which of the following gases causes acid
rain in the environment?Solution
The excess of nitrogen oxide and sulphur dioxide form nitric acid and sulphuric acid which cause acid rain.Â
‘N’ is the number of employees in an IT company ‘ABC’. The average age of employees working in the company is 45 years. What wil...
- The average weight of 10 individuals in an organization is 50 kg. When two new members, Akash and Binny, join the organization, their weights being in the ...
The average of the first 10 numbers is 'x+20', the average of the next 14 numbers is 'x', and the average of the remaining 16 numbers is 'x−30'. If th...
When the average age of a husband and wife and their son was 44 years, the son got married and a child was born just one year after their marriage. When...
The average wage of a group of 44 labourers is Rs. 250. If 4 persons receiving average wage of Rs. 275 leave the group and 2 persons receiving average w...
The average monthly salary of a group is ₹52,000. A new member joins earning ₹70,000, increasing the average by ₹1,000. Find the total salary of t...
Average of four numbers is 20. Sum of smallest and largest number is 50. If difference between other two numbers is 2, then find the square of second sm...
A bag contains 6 red, 10 yellow, and 14 black balls. If 2 balls are picked at random without replacement, find the probability that the first ball is re...
- Average age of 40 players in a team is 26 years. Two more players with ages (a + 6) and (a - 2) join, and the average age becomes 27 years. Find (a - 15).
In a group of 50 students, the average monthly tuition is Rs. 7,200. Following a fee adjustment, the new average monthly tuition per student is Rs. (720...
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