Wasn't  it good for him to help the poor .....

Have .....

Only the science students can apply for the post. Rule: While changing an affirmative sentence with 'only/alone/merely' into negative, none but/ nothing but/not more than or not less than is used. - If person, use none but. - If thing, .....

The sound that has frequency more than 20,000 Hz is called Ultra sound. And, the sound that has frequencey less than 20 Hz is called Intra sound. We humans have the capability to hear only between intra and ultra sound range, ie, between 20 Hz and .....

You know that sexual reproduction in higher plants and animals take place by the fusion of male and female reproductive cells. This process is called as fertilization. As a result of fertilization, a zygote is formed. Later on this zygote .....

7a)  Here, Arc length (l) =  44 cm. Center angle(θ) = 60o = [60 * π/180]c = (π/3)c We know, θ = l/r or, (π/3) = 44 /r or, r = (44 * 3)/π         = (44 * .....

The differences between the developmental activities and environmental conservation are:  

Eagle build nest called .....

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Developmental activities may be defined as efforts made by te humans to improve their living standard by utilising the resources. But, such activities has its own limitations. While utilising the resources we must focus on the conservation of the .....

Bangladesh is a south Asian country. It is one of the members of South Asian Association for Regional Cooperation(SAARC). India, Pakistan, Myanmar, Bhutan and Nepal are neighbouring countries of .....

Since, g(x) = g(x + 1), then         x2 + 4x + 5 = x2 + 6x + 10 or, 6x - 4x = 5 - 10 or, 2x = - 5 or, x = .....

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Decomposers break the organic matters present in dead living organisms into simpler compounds. These compounds are then utilized by the producers (plants) for the synthesis of their food. So, decomposers are responsible for the regular cycling of .....

After pollination, the pollen grain on the stigma creates a pollen tube through the style to end up in the ovary. Then, the pollen (having male gamete) travels through the pollen tube to combine with the eggs (having female gamete) at the .....

Characteristics of filament lamp are: 1. Filament lamp contains a thin coil of wire called the filament.    This heats up when an electric current passes through it and produces light as a result. 2. The glass bulb contains inert .....

Here, 5 pieces of bread per person. This means, To feed 1 person we need 5 pieces of bread. To feed 15 person we need 5 x 15 pieces of bread. [Note: to feed more person we need more pieces of bread] To feed 15 person we need 75 pieces of .....

Here,  8 people ate 64 pieces of oranges equally. 1 person ate 64/8 pieces of oranges. [ less person less pieces] 1 person ate 8 pieces of .....

Here, the cost of 2 dozen copies = Rs. 240 So, the cost of 24 copies = Rs. 240 [ 1 dozen  = 12]       the cost of 1 copy = Rs. 240/24.       the cost of 1 copy = Rs. .....

b)  Again, area of square (A) = l x l                                           =  (2a + 3b - c) x (2a + 3b - c)    .....

Here, Shivaram sold out 45 kg of potatoes at Rs. 27 per kg. This means, He sold 1 kg potato at Rs. 27. He sold 48 kg potatoes at Rs. 27 x 45. He sold 48 kg potatoes at Rs. 1215. Hence, Shivaram got Rs. 1215 selling 45 kg .....

 Here, A business man buys a box of 12 dozen biscuis for Rs. 1860. This means,    12 dozen biscuits cost Rs. 1860.    1 dozen biscuits cost Rs. 1860/12.    1 dozen biscuits cost Rs. 155. Hence, Rs. 155 .....

Here, The cost of 1 kg sugar is Rs. 40. The cost of 25 kg sugar is Rs. 40 x 25. [If you need more you need to pay more.] The cost of 25 kg sugar is Rs. 1000. So, the cost of 25 kg sugar will be Rs. .....

Here, total units = 200 units   Charge of 150 units = Rs. 8.60 x 150 [ Electricity rate for 0 -  150 is Rs. 8.60]                                   .....

Four effects of glacial flood are: 1. Glacial flood can cause coastal region (area by the sea) to relocate (move to a new and establish there). 2. Glacial flood causes soil erosion. As a result new coastal areas are formed. 3. Glacial flood can .....

Enormous fertility is one of the principle of Darwin's theory. Enormous fertility means rapid rate of multiplication. i.e. every species tends to multiply in geometric ratio. It means that population doubling its number in one year increases .....

Given, A tap can fill a cistern in 9 hours. This means,  In 9 hours the tap can be filled 1 cistern. In 1 hour the tap can be filled 1/9 cirtern. [ less time less cirstern can be filled] In 6 hours the tap can be filled 6/9 = 2/3 .....

Here,  Bishwant can do a piece of work in 12 days. This means,  In 12 days Bishwant can do 1 work.  In 1 day Bishwant can do 1/12 work. [ less day less work] In 3 days Bishwant can do 3/12 = 1/4 work. [ more day more work] 1/4 .....

Here, in the question, It is given that, In 6 days, 1 work is finished. That means, In 1 day, 1/6 part of work is finished.    [ Less no. of days means less work done] Now,  In 2 days, 2/6 = 1/3 part of work is .....

Solution,  In 6 days 2/5 part of the construction can be completed.  In 1 days (2/5)/6  part of the construction can be completed. In 1 days 2/30 = 1/15 part of the construction can be completed. Hence, 1/15 part of the .....

Solution,  In 4 hours 1/3 part of the tank can be filled.  In 1 hour (1/3)/4 = 1/12 part of the tank can be filled. Hence, 1/12 part of the tank is filled in 1 .....

Solution,  In 3 days 1/2 part of work can be done. In 1 day (1/2)/3 = 1/6 part of work can be done. Thus, 1/6 part of work is finished in 1 .....

In 6 hours 1 (whole part) water tank can be filled. In 1 hour 1/6 part water tank can be filled. Thus, 1/6 part of  water tank is filled in 1 .....

Solution, In 10 days (whole) 1 construction can be finished. In 1 day 1/10 part of the constructon can be finished. Thus 1/10 part of construction work is finished in 1 .....

Solution, In 4 days 1 work can be done. In 1 day 1/4 work can be done. Thus 1/4 part of work is finished in 1 .....

Here,  Volume of a brick (v) = 20 cm x 12 cm x 5 cm                                      = 0.2 m x 0.12 m x 0.05 m  [ 1 m = 100 cm]   .....

  x4 + 4 = (x2)2 + 22  [ x4 = (x2)2] = (x2 + 2)2 - 2.x2.2  [ a2 + b2 = (a + b)2 - 2ab] = (x2 + 2)2 - (2x)2 = (x2 + 2 + 2x)(x2 + 2 - 2x)   [ a2 - b2 = (a + b)(a - .....

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Solution,   25x + 3 = 1/0.04 or,  25x + 3 = 25 [ 1/0.04 = 25] or,  25x + 3 = 251 or, x + 3 = 1   [ ax = ay ==> x = y] or, x = 1 - 3 or, x = .....

Given, a/b= 3/4 Here, (2a - 3b)/2a + 3b)    = b{2(a/b) - 3}/b{2(a/b) + 3}  [ taking b common on both numerator and on denominator]   = {2 x 3/4 - 3}/{2 x 3/4 + 3} [ putting a/b = 3/4]   = (3/2 - 3)/(3/2 + 3)   = .....

solution,     x/2 - (x - 1)/3 = 1 or, {3x - 2(x - 1)}/3 = 1 [ taking LCM] or, 3x - 2x + 2 = 3 [ cross-multiplication] or, x = 3 -2 or, x = .....