Students and Teachers Forum
We have given, Mean(X bar) = a and ∑fX = a2, We need to find the number of terms (N). We know, Mean = ∑fX / N or, a = a2 / N or, N = a2/ a = a Hence N = .....
We have give , In a continuous series the value of assumed mean is 'M' and the sum of frequencies (f) is 'N, the deviation is (B). We need to find the mean(X bar) of the data. Mean = M + ΣfB / .....
Here, given that, In a grouped data ∑f = 'x2' and the mean is 'x'. We need to find ∑fm. We know, Mean = ∑fm / ∑f or, x = ∑fm / x2 or, ∑fm = x .x2 = .....
We have given, ∑fx = a2 and ∑f = a, we need to find the mean. We know, Mean = ∑fx/ ∑f = a2 / a = a. Hence , mean = .....
Let Ratna had Rs. y Then Moti Had y + 25. According to question, Moti spends half of the sum with him he would have RS. 10 less than Ratna , i.e, (y + 25) - (y + 25) /2 = y - 10 or, (y + 25) /2 = y - 10 or, (y + 25) = 2 .....
As we know that from left to right in a period atomic size decreases and from top to bottom in a group atomic size or radius increases and metals are electrons donors and non metals are electrons acceptors so metal reactivity increases from top to .....
Time taken to produce 20 cycles = 4 second Frequency of the wave = 20/4 = 5 Hz Wavelength = 3cm Wave speed= wavelength x frequency = 3 x 5 = 15 .....
We have given, In a data the assumed mean close to mid-value is 'a', deviation ,d = m - a The formula to calculate mean by step deviation method is, Mean = a + Σd/n , for individual data, Mean = .....
Nepal is a developing country in the world. Most of the people in Nepal are involved in agricultural activities. Besides agricultural activities, people in Nepal are involved in different economic activities. They are: - Trade and finance - .....
The service sector is one of the sectors of the economy that provide services rather than products. The main aim of this sector is to provide knowledge, skills, financial support, etc. The service sector of Nepal requires the following types of .....
You may know that Nepal is an underdeveloped country. Still so many things need to be done for the proper developement of the country. And, to make those things happen, the citizens of Nepal have to serve the country. They can contribute in any .....
2) Multiple fission: a) When several new individuals are formed from a single parent under unfavorable conditions, it is called multiple fission. b) Multiple fission is common in plasmodium, chlamydomonas, .....
It is often visible as a small pore in the ripe .....
Gynoecium is the innermost part of the flower. It has female reproductive units called pistils (or carpels) The pistil is the female part of the flower. It consists of a swollen base, the ovary. The ovary contains the potential seeds .....
Anther of stamen consists of pollen grains. Structure of a .....
You may have learnt about parts of flower. There are four different parts of flower. They are sepals, petals, stamen and carpel. Here, carpel is the innermost whorl of the flower. Carpel is the female reproductive organ of the .....
It consists of the filament and the anther. The filament is a stalk-like structure that attaches to the base of the flower and supports the anther. Stamens produce pollen in terminal saclike structures called .....
The importance of cytokinin is to promote cell division (cytokinesis) and ensure roots and shoots grow at equal .....
The importance of auxin is to help in plant growth. Auxin is produced at the tip of a plant shoot or root and It helps the plant cells to elongate. i.e. it causes the shoot or root to increase in .....
Plant growth and development are controlled by plant hormones. Plant hormones are also known as phytohormones. Some of plant hormones are as follows: 1) Auxin: promotes primary growth (lengthening) by promoting cell elongation 2) Cytokinins: .....
To build any of the projects in native investment is definately praiseworthy. But, at present, the situation of Nepal is horrible as whole the country is facing load shedding. In such situation, the government should not have revoked the .....
Active population consists of persons who in the reference period offered their work for the production of goods and services. Active .....
Nepal is a developing country. The development of infrastructure is very poor. Due to this, there are different problems like poverty, unemployment, etc. The major problems of employment in Nepal are as follows: - The political instability has .....
The difference between cooperatives and private companies is shown in the table below: Cooperatives Private Companies Cooperatives are service oriented rather than profit making. Private companies are .....
The advantages of cooperatives are as follows: - Cooperatives utilize the capital of local people for the empowering them. - Cooperatives invest for the upliftment of the socio-economic status of the local people. - Cooperatives are service .....
Capital formation means increasing the stock of real capital in a country. In other words, capital formation involves making of more .....
Nepal Rastra Bank (NRB), the Central Bank of Nepal, was established in 1956 under the Nepal Rastra Bank Act, 1955. It was established to discharge the central banking responsibilities including guiding the development of the embryonic domestic .....
Commercial Bank (Class A):- A Commercial bank is a type of Bank / Financial Institution that provides services such as accepting deposits, making business loans, and offering basic investment products. Some of them are:
Globalization is the process of internalization of goods, services, culture, etc. It is a process of vanishing of the borders between various countries. It has many strengths. The four strengths of globalization are as follows: - It allows the .....
A bank is a financial institution licensed to receive deposits and make loans. Banks may also provide financial services, such as wealth management, .....
If there were no banks, there will be the difficulty in saving money. Similarly, the money will not be properly utilized. The problems of robbery would increase. And people have to bear the great loss in such .....
A bank is a financial institution licensed to receive deposits and make loans. Banks may also provide financial services, such as wealth management, .....
| Define Black Marketing and present the wyas to control it. |
A black market is the illegal purchase and sale of goods and services. Economic activity that takes place outside government-sanctioned channels. Black market transactions usually occur “under the table” to let participants avoid .....
Monopoly is the market situation where one producer or a group of producers controls the supply of a good or service. And, the entry of new producers .....
Five differences between non-life and Life Insurance
Life insurance essentially insures human life, .....In international relations, there are no permanent friends or permanent enemies, only permanent interests. WWI is also known as the First World War, The Great War, The European War, and The War of the Nations. It was fought primarily in Europe .....
The solutions to these problems are as follows: - The balance between export and import should be maintained properly. - The problem of open border should be managed well. - The limited trade market should be extended to different countries in .....
Nepal's foreign trade is not prospering. It has many problems, which are, Too much import and too little export: Nepal's export .....
| Source | Intensity |
| X | 10 dB |
| Y | 20 dB |
| Z | 40 dB |
By how many times is the sound 'Y' louder than the sound 'X'? How?
Here, the intensity of source Y is given 20 dB and that of X is given10 dB. Increase of intensity by 10 dB means that the intensity of sound is 10 times greater. Greater the intensity, greater is amplitude and louder is the sound. So, the .....
Now, let you try .....
At present, the scope of money (currency) is so immense. It is in the form of notes or coins or visa or debit or master cards. And, these forms of money are easier to carry and carry out transactions. The visa card or master card are also the .....
But, the life without money would not have been this productive. It would have been very difficult as the trade and commerce would not have flourished to this extent. It would have been very hard for the people to fulfill their most of the basic .....
- The government should focus on the development of infrastructure which helps to uplift the status of tourism in Nepal. - The colleges and the training institutes should be established focusing on the production of quality manpower .....
For this, we rotate the turbine by blowing wind or flowing water. Do you know, what happens when we rotate the turbine? The turbine rotates the axle of the generator. It makes the coil rotate. The coil is present in between the .....
चिसो विशेषण त्यसैले क्रिया विशेषण ओडेर क्रिया .....
सुकुम्बासी ः खोलाको किनारमा सुकुम्बासीहरुको बस्ती रहेछ । कुरुमकुरुमः बहिनीले कुरुमकरुम .....
Exercise 5 1. This incident will be forgotten in a few months' time. 2. You will be given the other details by Miss Mathema. 3. The child will be disturbed by the loud noise of passing vehicles. 4. The goods shall be despatched .....
The questions in exercise 7 are in the Past Continuous Tense. Let's learn its rules of changing active to passive voice of Past Continuous Tense. Active sentences in the past continuous tense have the following structure: Subject + .....
To change active to passive of past perfect tense, we need to know some rules. Let's learn its rule with some examples. Active voice: Subject + had + past participle form of the verb + object Passive voice: Object of the .....
While changing from active to passive voice which is in Future perfect tense, you need to know some rules of it. Let's learn some rules with examples. Active: Subject + will/shall + have + past participle form of the verb + .....