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Van Leeuwenhoek discovered "protozoa"  the single-celled organisms and he called them .....

Kalimati, Kathmandu 7th March  2019 Dear Pratham, Thank you so much for your letter that I received yesterday morning. I am pleased to learn that you have achieved A+ in SEE. Well done! It is an immense success. So, accept my heartiest .....

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For scientists, they offer a unique opportunity to study aspects of the sun like its corona, the layer of plasma surrounding the star.  During a total solar eclipse, the moon blocks the sun's and offers a glimpse at the "relatively .....

If the distanc between two bodies from their centre is increased by 3 times (3d) by increasing the mass by 2 times. Here, F1 = G. m1 . m2 /d2 According to the statement, F2 = G 2m1 . .....

Three reasons why thermonuclear is not possible. Commercial power plants would be extremely expensive to build. Requires extremely high temperatures. Difficult to contain. Could produce a net negative amount of .....

The Kathmandu valley itself was divided into three kingdoms, i.e. Kathmandu, Bhaktapur and Patan. There were at least three powerful kingdoms in the east-Makawanpur, Vijaypur and Chaudandi. Similarly, there were 24 Principalities in the .....

We know, vector AC = vector AB + vector BC = (5, 3) + (-2, 0) = (5 - 2, 3 + 0) = (3, 3). Now,  1/3 AC = 1/3 x (3, 3) = (3 x 1/3 , 3x1/3) = (1, 1). Its direction = tan-1(y-component / x-component) = tan-1(1/1) = tan-1(1) = .....

We should do the following things to control early marriage: - We should educate the girls. - The law made against child marriage should be implemented strictly. - The parents should be made aware of the negative effects of early marriage. - The .....

Given, f( x+1 ) = 3x+5 f( x+1 ) = 3x + 3 + 2 f( x+1 ) = 3( x+1 ) + 2 We can write it as, f( x  ) = 3x + 2 f( 2x ) = 3*2x + 2 f( 2x ) = 6x + .....

A process in which the welding heat is generated by passing a stream of hydrogen through an electric arc between two inclined tungsten electrodes. The hydrogen gas is normally diatomic (H2), but where the temperatures are over 600 °C (1100 .....

Here,  a = x  & b = 729 No.of means  = n = 5 Third mean = m3 = 40 or, ar3 = 81...................(i) And,  b = ar5    [ Since, there are 4 + 2 = 6 terms altogrther and and b is 6th term.] or, .....

This is wrong question. You can check by using .....

There are two broad categories of disasters. They are natural and man-made. Earthquakes, landslides, volcanic eruptions, floods and cyclones are all natural disasters. Stampedes, fires, transport accidents, industrial accidents, oil spills and .....

Here, 2f(x) + f(1/x) = 6x + 3/x................(i) Put x = 1/x, we get, 2f(1/x) + f(x) = 6/x + 3x............(ii) Multiplying (i) by 2 and subtracting (ii) we get 4f(x) + 2f(1/x) = 12x + 6/x 2f(1/x) + f(x) = 6/x + 3x -        .....

संविधान सभालाई निम्नानुसारको प्रतिनिधित्वबाट समावेशी बनाउने प्रयास गरिएको थियो । - पहिलो .....

Here, 2f(x) + 3f(1/x) = (4x2 + 6)/x................(i) Put x = 1/x, we get, 2f(1/x) + 3f(x) = (4/x2+6)x = (6x2 + 4)/x............(ii) Multiplying (i) by 2 and (ii) by 3 and subtracting them we get 4f(x) + 6f(1/x) = (4x2 + 6)/x 6f(1/x) + .....

नेपालमा संविधान सभाको गठन देहायबमोजिम मिश्रित निर्वाचन प्रणालीअनुसार हुने व्यवस्था .....

Here, LHS = sin6A/4 + cos6A/4 = (sin2A/4)3 + (cos2A/4)3  = (sin2A/4 + cos2A/4)(sin4A/4 – sin2A/4.cos2A/4 + cos4A/4) = 1 (sin4A/4 – sin2A/4cos2A/4 + cos4A/4 + 2sin2A/4.cos2A/4 – 2sin2A/4.cos2A/4) = (sin2A/4 + .....

Here, LHS = {1 + sin(2A) + cos(2A)}² = {2sin(A)cos(A) + 2cos²A}²           [ Since, 1 + cos2A = 2cos2A.]  = [2cos(A){sin(A) + cos(A)}]²  =  4cos²A{sin(A) + .....

Here, LHS = {1 + tan2(45o - B)} /{1 - tan2(45o - B)} = 1/[{1 - tan2(45o - B)} /{1 + tan2(45o - B)}]  = 1/{ cos2(45o - B)}    [ Since, cos2A = (1 - tan2A)/(1 + tan2A).] = 1/{ cos(90o - .....

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a. Everybody knows the answer, don't they? b. I am never with you, aren't I?   c. Mingma has never been to Pokhara, has he? d. The coat is hanging on the wall. e. Raju is playing x football in his room. f. He cut a tree with an .....

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We will try to solve your problem very .....

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Here, Let a be the length of side of base of equilateral triangle. Then,       LSA = 336m2. or, 4 ⨯ Area of a triangular face = 336 or, 4 ⨯ 1/2 ⨯ a ⨯ l = 336 or, a = 336 /(2 ⨯ 24) = .....

Here,  CSA of a pencil = Circumference x length = 1.5cm x 25cm = 27.5cm2. CSA of 120000 pencils(A) = 120000x 37.5cm2 = 4500000cm2. Rate  = C = Rs.5 / 100cm2. Finally,  Total cost = A x C  =  .....

Cost price is the price at which goods are or have been bought by a merchant or retailer. Cost price is the total amount of money that it costs a manufacturer to produce a given product. A cost price includes all outlays that are required for .....

Here, you have to find the remaining income of the prime minister. Tax paid for Rs. 300000 = 1% of Rs. 300000 = Rs. 3000 But, he had paid Rs. 1259.50 tax in total. So, remaining tax = Rs. 1259.50 - Rs. 30000 = -Rs. 1740.50   ( we get - .....

क) नेपाललाई औँलामा नचाउन सकिने नेपालीलाई लोभको पासो फालिदियो भने बत्तीको पुतलीझैँ झुम्मिने र .....

Here,  {(1/2n - 2m)R x (2m  + 1/2n)R }/{(2n+ 1/2m)R x (1/2m  - 2n)R } = [{(1 - 4mn) x (4mn  + 1)/(4n2)  }/{(4mn+ 1) x (1  - .....

Here, (2/25)-3/4 x (4/625)5/8 ⊹ (2/25)1/2 = (2/25)-3/4-1/2 x (4/625)5/8  = (2/25)-5/4 x (4/625)5/8 = (2/25)-5/4 x (22/252)5/8 = (2/25)-5/4 x (2/25)2x5/8 = (2/25)-5/4 x .....

Here,  (a4 - b4)(c4 - d4) - 4a2b2c2d2. =  a4c4 - a4d4- b4c4 + b4d4 - 4a2b2c2d2. = (a2c2)2 - 2a2b2c2d2 + (b2d2)2 - (a4d4+ b4c4 + 2a2b2c2d2). = (a2c2)2 - 2.a2c2.b2d2 + .....

Here,  We need to factorize 7√2 ( a + 1)2 - 10(a + 1) - 4√2. Let a + 1 = x, then it becomes, 7√2x2 -10x-4√2 = 7√2x 2 - 14x + 4x - 4√2 = 7√2x(x-√2) + 4(x - √2) = (x - .....

Here, x = { a + √(a2 + b3)}1/3 + { a - √(a2 + b3)}1/3  Now cubing both sides we get x3 = [{ a + √(a2 + b3)}1/3 + { a - √(a2 + b3)}1/3 ]3 Using formula .....

We know that nitrogen is a inert gas.  The flammable vapors in fuel tanks are rendered inert by replacing the air in the tank with an .....

Here,  x,x+1,x+2,x+7,x+9 are in ascending order and their median is 6. No.of item = n = 5 Median = (n + 1)/2th item  = (5 + 1)/2th item = 3rd item = x + 2. But, median = 6. Thus, x + 2= 6 or, x = 6 - 2 = 4. Thus, .....