Students and Teachers Forum
In bearing Small balls are used, which roll inside bearing. We know friction is less when we roll .....
Variable |
Frequency |
10-20 |
12 |
Total |
230 |
Variable Frequency CF 10-20 12 12 20-30 30 32 30-40 x 32+x 40-50 65 97 + x 50-60 y 97 + x + y 60-70 25 112 + x + y 70-80 19 131 + .....
Variable |
Frequency |
10-20 |
12 |
Total |
230 |
Here, Let missing frequency be x and y.
Variable
Frequency
Cumulative frequency (cf)
Height (cm) |
125-130 |
130-135 |
135-140 |
140-145 |
145-150 |
150-155 |
Frequency |
5 |
? |
13 |
21 |
15 |
12 |
Height Frequency CF 125-130 5 5 130-135 x 5 + x 135-140 13 18 + x 140-145 21 39 + x 145-150 15 54 + x Since median is 142.5 Median class = 140 - .....
Weight (in Kg) |
40-44 |
44-48 |
48-52 |
52-56 |
56-60 |
60-64 |
|
No. of persons |
8 |
10 |
14 |
16 |
3 |
1 |
|
Mean or .....
Marks | 0-20 | 20-40 | 40-60 | 60-80 | 80-100 |
No of students | 3 | 6 | 8 | 5 | 2 |
Marks Number of students Cf 0-20 3 3 20-40 6 9 40-60 8 17 60-80 5 22 80-100 2 24 N = .....
a. Who is Roland Emmerich? Ans. He is the director and scriptwriter of the movie "2012". b. When was the movie "2012" released? Ans. It was released on November 13, 2009. c. What .....
a. The movie reviewer awards four stars to the film "2012". b. Emmerich broadens out a bit of pseudo-history and some pseudo-science in "2012". c. John Cusack is protagonist . d. "2012" kills extremely .....
Better income, better and secured future, risk of fatal disease, skillful manpower is highly paid, knowledge of different languages is beneficial, must go legally, get right information from the government offices, get help from the helpline……. |
Mother: Now, time has come for you to go abroad. I am sure that you will keep yourself safe and sound. Uncle: Of course. I am aware of the things I should follow there. I will try my best for good life there. Mother: Yes. You should try to find some .....
I would prefer to be a ideal citizen. A citizen is a member of a political community. An ideal citizen knows his/her rights and responsibilities. An ideal citizen respects others and, respects the environment, and contributes to the society and .....
The kids in the picture are enjoying a hanky-hiding .....
We know, 3X = 2X + X Now operating both sides by cot, cot3X = cot(2X +X) or, cot3X = ( cot2X.cotX - 1) / ( cot2X + cotX) [ Since, using formula of cot(A - B).] Now cross- multiply and arrange to .....
We know, 30o = 5o + 25o Operating both sides by Tan, Tan30o = Tan(5o + 25o) or, 1/√3 = ( tan5o + tan25o)/( 1- tan5o.tan25o) [ Since, using value of tan30o & formula of tan(A + B).] Now cross-multiply and get .....
We know, 8A = 6A + 2A Now operating both sides by cot, cot8A = cot(6A + 2A) or, cot8A = ( cot6A.cot2A - 1) / ( cot2A + 6A) [ Since, using formula of cot(A - B).] Now cross- multiply and arrange to .....
Here, LHS = [cos20 - sin20] / [ cos20 + sin20] = [ cos(45 - 25) - sin(45-25)]/ [ cos(45-25) + sin(45 - 25)] Now use formula of sin(A-B) & cos(A-B) and simplify . After that, put sin45 = cos45 = 1/√2 and .....
Your question must be cot22o .cot23o - cot22o - cot 23o = 1 Now, We know, 22o + 23o = 45o Operatng by cot on both sides, cot(22o + 23o) = cot45o or, [ cot22o.cot23o - 1] / [ cot22o + .....
सामान्यतः अपाङ्गता भएका व्यक्तिलाई हेर्ने हाम्रो समाजको दृष्टिकोण सकारात्मक छैन । धेरैको .....
कुमार र कुमारकी बहिनी “म पनि सक्छु” मनोवादका पात्र हुन् । कुमार कक्षा १० मा पढ्छन् र उनकी .....
कुमारका आमबुबाले फर्निचर पसल थापेका छन् । त्यही पसलमा उनीहरू रात दिन काम गर्छन् .....
Classification is important because it allows scientists to identify, group, and properly name organisms via a standardized system (Linnaeus Taxonomy); based on similarities found in the organisms DNA/RNA (genetics), Adaptations (Evolution), and .....
कृपया प्रश्न राख्नुहोला .....
We know that Nepal is the home of 125 castes. This show that people in Nepal are of different cultural backgrounds. They follow different religions. They celebrate different festivals. Chhat is one the most celebrated festivals in Nepal. It is .....
Here, We have to use complete square method for factorizing this. 4x4 + 1/(625y4) = (2x2)2 + 1/(25y2)2 = (2x2 + 1/ 25y2)2 - 2.2x2 . 1/25y2 = (2x2 + 1/ 25y2)2 - (2x/5y)2 Now use .....
The land achieved by certain individuals (e.g. religious teachers, priests, loyal soldiers etc.) from the state (rulers) as a reward was called Birta. This land was exempt (free) from tax. Certain individuals in the society would ingratiate .....
- to empower the Madhesi people participate in the decision-making process - to mainstream the Madhesi people in the governance system - to make suggestions to the Government of Nepal about policies and programs to be pursued for the development .....
Here, (√x + √a)/(√x - √a) + (√x - √a)/(√x + √a) = 2 Taking LCM, [(√x + √a)2 + (√x - √a)2] / [ (√x .....
Here, (7x - 36) / ( √7x +6) = 9 - (5√7x - 11)/ 3 or,[ ( √7x)2 - 62] = [27 - (5√7x - 11)]/ 3 or, ( √7x +6) ( √7x - 6) /( √7x +6) = ( 16 - .....
Here, (3x - 4) / ( √3x +2) - (√3x - 2)/ 2 = 2 or,[ ( √3x)2 - 22] = 2 + (√3x - 2)/2 or, ( √3x +2) ( √3x - 2) /( √3x + 2) = ( 4 + √3x - .....
Total Fertility Rate(TFR) is the average number of live births to a woman throughout her reproductive period. It is calculated in per woman. The total fertility rate can be calculated using age-specific birth rates. An age-specific birth .....
Fulcrum is the point against which a lever is placed to get a purchase, or on which it turns or is .....
= 8x3 - 5x3 = .....
= 3a2 - 2a2 = .....
Here,
x-y = 4 ---------------(1)
x2+4xy+y2=0 .............(ii)
Simplifying the above equation x2+4xy+y2+3y2=3y2 (x+2y)2 =3y2 or, x + 2y = ∓√3 y or, .....
Lignite is a soft brownish coal showing traces of plant structure. Lignite is generally yellow to dark brown or rarely black coal that formed from peat at shallow depths and temperatures lower than 100 °C (212 .....
From this collapse, pockets of dust and gas began to collect into denser regions. As the denser regions pulled in more and more matter, conservation of momentum caused it to begin rotating, while increasing pressure caused it to heat up. Most of .....
Well, conflict between individuals occurs if the individuals have two different opposing view or ideology. If the individuals cannot find the solutions, the conflict occurs. Similarly, discriminatory behaviors are one of the main causes of .....
You know that Trusteeship Council is one the main organs of United Nations. It was established in 1945 AD by UNO charter. The main aim of the Trusteeship Council was to promote the advancement of the inhabitants of Trust Territories. It was .....
Tulsi Meher Shrestha was born in a middle-class Newar family of Bhelakshe tole, Lalitpur on 30th December 1896 A.D. He was a strong man, He thought that as long as these social evils and equality remained, a society cannot progress. He started .....
We know that several significant deserts stretch across Asia and the Middle East. Hence, the desert climate is found in central .....
An aqueous solution is any solution in which water (H2O) is the solvent. In a chemical equation, the symbol (aq) follows a species name to indicate it is in aqueous solution. For example, dissolving salt in water has the chemical .....
Function of .....
Marks | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
No of student | 5 | 15 | 20 | ? | 20 | 10 |
Marks mid value ( m ) No of students ( f .....
Wages | 15-25 | 25-35 | 35-45 | 45-55 | 55-65 |
No of workers | 4 | 6 | 12 | m | 3 |
Use the formula, Mean(X) = ϵfx / ϵf By question, 10 =700 + 5t / 40 + .....
Animals and plants are interrelated. They share very important relationship. Plant produces food which is consumed by animals. After death of animals, they get decomposed, from which plants get nutrition. Animal helps plants in pollination .....