A published announcement of death, that generally contains a short biography of the dead .....

Our constitution clearly separates the powers of the legislature, executive and judiciary. Our constitution regards judiciary is the supreme body. Only judiciary has the power to interpret the constitution. The judiciary must remain .....

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Here,  ∠ABD = 250 (vertically opposite angle) ∠ABD + z0 = 900 (given) or,  z0 = 900 - 250              = 650 or, x0 = ∠ABD (alternate angle)   .....

Here, Let l be the length & b be the breadth of plot. Then, 2( l + b) = 46 or, l + b = 28 or, l = 28 - b.......................(i) And  Area = 126 or, lb = 126 or, (28  - b) b = 126 or, 28b - b2 - 126 = 0 or, b2 - .....

Here, Height of tank (h)  = 2m Breadth (b) = x Length (l) = (x + 2) m Volume (V) = 160m3 We know, Volume(V) = l ⨉ b ⨉ h or, 160 = 2 ⨉ x ⨉ (x + 2)  or, 160 = 2x2 + 4x or, x2 + 2x - 80 = .....

Let a be the first term and r be the common ratio. Then,     t4 = 54 or, ar3 = 54........(i) And,       t6 = 24 or, ar5 = 24................(ii) Now, Divide (ii) by (i) and find r, then .....

When we are at the top of the mountain acceleration due to gravity is g = GM        (R+H)2 So, you can see that g is inversly proportional to the distance of the object from the center of the earth, i.e the greater .....

30th. July 2018 Thapathali, Kathmandu, Nepal Dear friend, I am really glad to receive your letter last Sunday. In the letter, you have asked me to highlight the importance of the computer in the 21st. century. It is beyond doubt that the .....

When saw is used to cut a log of wood, work is done against the force of friction between the saw and log, therefore the work done (mechanical energy) is converted into heat energy. So, it becomes .....

An algorithm is a sequence of steps required to solve a particular problem. The concept of algorithm was given by ALKHOWARISMI. Some characteristic of an algorithm are listed below: - Each and every instruction should be precise and unique. - An .....

Let the two numbers be 'x' and 'y'. According to the quetion : x + y = 21 ............i x - y = 1 .............ii Add equation i and ii. We get , x + y = 21 x - y = 1 -------------- 2x = 22 ∴ x = 22 / 2 = 11 Put this .....

Let two digit number be 10x + y. From the first case, x + y = 11   or, x  = 11 - y............(i) From the second case, x = y + 1. Solve these and find the .....

Let present age of father be x and son be y. From the first case, x + 2y = 70 or, x = 70 - 2y.........................(i) From the second case,  y + 2x = 95.....................(ii) Now solve (i) and (ii) and find x & .....

In the given figure: OY = OR   [radius of a circle ] So, ∆ORY is an isosceles triangle. i.e. ∠ORY = ∠OYR = 20° Now, ∠ORY + ∠OYR + ∠ROY = 180° or, 20° + 20° + ∠ROY = .....

Here,  ∠ YQP + ∠ YQR = 180°     [ angle formed by straight line ] or, ∠ YQP = 180° - 95° = 85° In ∆PYQ ∠ YQP + ∠ YPQ + ∠ PYQ = 180°      [ sum of .....

Here, Given a quadrilateral ABCD with internal angle bisectors AE, BE, CH and DH of angles A, B, C and D respectively and the points P, Q, G and H form a quadrilateral EFGH. To prove that EFGH is a cyclic quadrilateral. Now,  ∠HEF = .....

Here, AB = BC, So, ∡ YAX = ∡ XCA = x (say.) ∡ YAC = ∡ YCX           [ Both are 180o - x.] So, Qd.ACYX is cyclic.     [ Since, ∡ YAC = ∡ YCX , angle on same .....

Join O&E and O & D. Then, Find ∡EOD . Since, ∡EOD + ∡A = 180o Now, find ref.∡EOD. Finally,    x = 1/2 of Ref.∡EOD. Find .....

Here is an example. Look carefully and try .....

Let us make figure according to question. Here,  AP + BQ +CR = 0 ,  [ Since, medians of a triangle are concurrent.] or, AO + OP + BO + OQ + CO + OR = 0,   [ whole part axiom.]  or, AO + BO + CO + (OB + OC)/2 + (AO + .....

Mt. Kanchenjunga is the third highest mountains in the world and also ranked second highest mountain in Nepal (after Mt. Everest). As a matter of fact, it lies in both countries; Nepal and India. The center, main and south peaks are situated in .....

Here,  Cost price (CP) = 100 Profit = 20% Then, selling price(SP) = CP + (20/100) ⨉ CP                                          = 100 .....

Here is an example. Replace A by θ and try to do .....

Nutrition is the intake of food, considered in relation to the body’s dietary needs. Nutrition is required for the proper growth and development of our body.  Poor nutrition can lead to reduced immunity and low physical and mental .....

Food is any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth. We need food because food provides energy, to makes our body work, grow and repair itself. Without food we cannot .....

2NH3 + 2H2SO4→(NH4)2SO4 I dont think hydrogen will be formed during this .....

Ammonia + Water → Ammonium hydroxide NH3 + H2O .....

 CO2 + H2O = H2CO3  This equation is already balanced. To balance any chemical equation, you have to make the number of molecules equal in both the reactant and .....

Ca(HCO3)2 → CO2 + H2O .....

Ca (s) + 2H2O (l) → Ca(OH)2(aq) + H2 .....

 H2SO4 + 2KOH → K2SO4 + .....

Ca(OH)2 + CO2 → CaCO3 + .....

The sex ratio is the ratio of males to females in a population. It is the proportion of males to females in a given population. Sex ratio is used to describe the number of females per 100 of males. The sex ration of Nepal .....

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You know that there is political instability in Nepal. The country is just recovering from decades-long civil war. The available resources have not be utilized well in the country. There are problems like corruption, unemployment, illiteracy .....

Electricity circuit board contains various components such as source, conductors, switches and loads. When switch is closed, electric current flows through the conductive path and work is done on load. The load may be lamp, fan or any other .....

The fan was invented in 1882 by Schuyler Skaats Wheeler. A few years later, Philip Diehl mounted a fan blade on a sewing machine motor and attached it to the ceiling, inventing the ceiling fan, which he patented in .....

Loadstone is a naturally occurring magnet.  Microscopic examination of lodestones has found them to be made of magnetite (Fe3O4) with inclusions of maghemite(cubic Fe2O3), often with impurity metal ions titanium, aluminum, and .....

The challenges to sustainable development are as follows: - Climate change is one of the challenges to sustainable development. - Terrorism is another challenge to sustainable development. - Global warming can also be taken as one of the .....

Sustainable development brings about changes in people’s knowledge, attitude, and skill. Sustainable development emphasizes on the progress of health, education, agriculture, tourism and social reform. It gives emphasis on people's .....

We can improve the efficiency of a simple machine by reducing friction. And the friction can be reduced in the following ways:- 1. By using lubricants like oil, grease, etc. 2. By using ball-bearings, wheels and rollers. 3. By making surface .....

Given, Candidates who passed in english n(E) = 70% Candidates who passed in maths n(M) = 75% Candidates who passed in both subjects n(E⋂M) = 65% We know, n(E⋃M) = n(E) + n(M) - n(E⋂M)                = .....

The difference between short periods and long period is based upon the number of element in each periods. There are two short periods in the periodic table the 2nd periods and the 3rd periods. Both these contain eight element only. The long .....

Solids are one of the three states of matter and, unlike liquids or gases, they have a definite shape that is not easy to change. The particles of a solid are linked by strong forces, which pull the particles tightly together. So, although the .....

The washer of an airpump used with grease/oil because it is all about not having an evaporating substance that will wear thin or dry out and leave a dry or incomplete .....

Water evaporates in a vacuum, so the level will go down until the pressure is that of the water temperature’s damp point, and that is considerably lower than the 10 meters it should read.  Mercury is commonly used in barometers because .....

Now using x = 24o the angles are: 2x = 2 ⨉ 24o      = 48o 3x = 3 ⨉ 24o      = 72o 4x = 4 ⨉ 24o      = 96o 6x = 6 ⨉ 24o   .....

Mechanical advantage of a machine is the ratio of the force that performs the useful work to the force applied, assuming there is no friction in the machine.   In practice, the actual mechanical advantage will be less than the theoretical value .....