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The main contribution of land routes to India in ancient times are :

(i) Trade

(ii) Expansion of scientific knowledge.

(iii) Learning of other nations and cultures.

(i) Trade flourished through the land trade routes. The Silk route passing through the Himalayas is an excellent example. 

(ii) Land routes enabled the expansion of scientific knowledge; important breakthroughs in science, technology, and mathematics were communicated to far across lands through ancient routes. 

(iii) The land routes also helped in the understanding of the cultures and traditions of other nations.

If capital expense is recorded as revenue expense then which calculation will be wrong Net Profit.

The amount by which the credit side of Trading account exceeds the debit side is called Gross Profit.

Answer given below:

https://bit.ly/2Jp9YtR

(d) A concave lens is used to correct this defect.

Hypermetropia is corrected by using a concave lens. Myopia is corrected by convex lens.

(a) our blood exerts a pressure slightly more than that of the atmosphere.

We don’t feel the atmospheric pressure because our blood exerts a pressure slightly more than that of the atmosphere.

Bank reconciliation statement is prepared by Accountant of Business.

A bill was drawn and accepted on 12th June 2018 for two months its date of maturity would be 14^th August 2018.

Following are the limitations of Mail Order Business.

a) Lack of personal contact 

b) High Promotion cost 

c) Postal delay d) No after sales service 

e) No credit facilities 

f) Possibility of abuse 

g) High dependence on postal service 

Let a₁₁ = a₁. Multiplying the given equation by 2 we get 

(a₁ - a₂₎2 + (a₂ - a₃)2 + .... (a₁₀ -  a₁)² = 4. 

Note that if a_i - a_i+1 = ±2 for some i = 1; .....10, then a_j - a_j+1 = 0 for all j ≠ i which contradicts the equality ∑¹⁰_i=1(a_i - a_i+1) = 0. Therefore a_i - a_i+1 = 1 for exactly two values of i in {1, 2....10}, a_i - a_i+1 = -1 for two other values of i and a_i - a_i+1 = 0 for all other values of i. There are (10, 2) x (8, 2) = 45 x 28 possible ways of choosing these values. Note that a₁ = -1, 0 or 1, so in total there are 3 x 45 x 28 possible integer solutions to the given equation.

Rotating the conguraiton about A by 90^0, the point B goes to the point C. Let P denote the image of the point D under this rotation. Then CP = BD and ∠ACP = ∠ABC = 45⁰, so ECP is a right-angled triangle with CE : CP = 4 : 3. Hence PE = ED. It follows that ADEP is a kite with AP = AD and PE = ED. Therefore AE is the angular bisector of ∠PAD. This implies that ∠DAE = ∠PAD/2 = 45⁰.

Square of 59

= 59² 

= 59 × 59

= 3481

= √11025

= √105 x 105

= 105

We factor the given number,

2592 = 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3

2592 = 36√2

We have to multiply 2 so that we get a perfect square.

= 2592 x 2

= 5184

= √5184

= 72

Therefore, The smallest number is 2 which has to be multiplied.

Square root of 96 1/25.

= 96 1/25

= √2401/25

= 49/5

Square root of 96 1/25 = 49/5

√2401

= √7 x 7 x 7 x 7

= √7² x 7²

= 7 x 7

= 49

√25

= √5 x 5

= √5²

= 5

= √59

= √59 cannot be reduced

√59 ≈ 7.681145747868608

Finding square roots of of numbers that aren't perfect squares without a calculator

1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.

2. Divide - divide your number by one of those square roots.

3. Average - take the average of the result of step 2 and the root.

4. Use the result of step 3 to repeat steps 2 and 3 until you have a number that is accurate enough for you.

37² – 36²

Using property, for any natural number n,

(n+1)² – n² = (n + 1) +n

= (36 + 1)² – 36² = (36 +1) + 36

=  37² – 36² = 37 + 36

= 37² – 36² 

= 73

37² – 36²

Using property, for any natural number n,

(n+1)² – n² = (n + 1) +n

= (36 + 1)² – 36² = (36 +1) + 36

=  37² – 36² = 37 + 36

= 37² – 36² 

= 73

We know that the square of an odd number is odd and the square of an even number is even.

(1) 654 is even. So, the square of 654 is also even.

(2) 6776 is even. So, the square of 6776 is also even.

(3) 7025 is odd. So, the square of 7025 is also odd.

(i) We know that,

A number which ends with 2 is not a perfect square  

Also, the given number 5372 is ending with the digit 2  

Therefore,  

The given number is not a perfect square  

(ii) We know that,  

A number which ends with 3 is not a perfect square  

Also, the given number 5963 is ending with the digit 3  

Therefore,  

The given number is not a perfect square

(iii) We know that, 

A number which ends with 7 is not a perfect square 

Also, the given number 8457 is ending with the digit 7 

Therefore, 

The given number is not a perfect square 

(iv) We know that, 

A number which ends with 8 is not a perfect square 

Also, the given number 9468 is ending with the digit 8 

Therefore, 

The given number is not a perfect square

(v) We know that,

Any number which ends with an odd number of zeros is not a perfect square

Also, the given number 360 is ending with the digit 0 

Therefore, 

The given number is not a perfect square

(vi) We know that,

Any number which ends with an odd number of zeros is not a perfect square 

Also, the given number 6400 is ending with the digit 0

Therefore,

The given number is not a perfect square

(vii) We know that, 

Any number which ends with an odd number of zeros is not a perfect square 

Also, the given number 2500000 is ending with the digit 0 

Therefore, 

The given number is not a perfect square

Let's start from an example: square of 10 = 100

[note a number contains 1 zero then its square have 2 zeroes]  

Now let's consider another example: square of 100 = 10000  

[note a number contains 2 zeroes then its square have 4 zeroes]  

Now let's talk about a number contains 3 zeroes at the end  square of 1000 = 1000000  

Conclusion: every time zeroes get double. 

Then the answer is 6 zeroes.

List of Bacterial plant diseases:

• aster yellows 
• bacterial wilt 
• blight 
• fire blight 
• rice bacterial blight 
• canker 
• crown gall 
• rot 
• basal rot 
• scab

List of Viral plant diseases:

• curly top 
• mosaic 
• psorosis 
• spotted wilt

Plants and bacteria both have cell walls but they are shaped differently. Unlike bacteria cells, plant cells and animal cells both have membrane bound organelles such as a nucleus, ribosomes, lysosomes, Golgi apparatus, endoplasmic reticulum, the cytoskeleton, microvilli, smooth endoplasmic reticulum and cell membranes. 

However, plants also have food vacuoles and chlorophylls which most animal cells don't have. Furthermore, plant and animal cells are both eukaryotic cells and bacteria cells are prokaryotes. Bacteria cells lack membrane bound organelles, don't have mitochondria and have a nucleoid where the genetic information is stored instead of a nucleus. 

Also, bacteria multiply by binary fission instead of mitosis and meiosis which are both used by eukaryotic cells. Bacteria use their cell membrane to produce ATP instead because they lack mitochondria.

The full form of e-mail is  electronic mail.

The conditions established, is called delivery note.

Communication is required by a business for  transmission of ideas and information. 

customers. ....

A departmental store is generally formed as a joint stock company.

Haldiram is an example of Multiple shop. 

 both a and b. 

Surface area of one tile 20 × 20 = 400 cm² 

Total surface area of the tiles = 9000 × 400 = 3600000 cm² 

So , surface area pf floor = 360 m² 

Hence, area of the floor of the hall is 360 m².

P = Rs. 1950  

A = Rs. 2125.50  

R = 5%  

I = A – P  

= Rs. 2125.50 – Rs. 1950

= Rs. 175.50  

T = (100 × I)/(P × R) 

= (100 × 175.50)/(1950 × 5) 

= 17550/9750 

= 1755/975 

= 117/65  

= (9/5) years 

= (1. 4/5) years  

= 1 years 292 days  

∵ (4/5) years   

= 4/5 × 365 days = 292 days  

Jan. + Feb. + March. + April + May + June + July + Aug. + Sept. + Oct.  

(31 – 5) + 29 + 31 + 30 + 31 + 30 +31 + 31 + 30 + 23 = 292 days  

∴ Required date = 23rd October 2012

Persons who start a company are called Founder.

A wire-gauze is a rectangular wire mesh with asbestos at its center. 

Uses of a wire gauze: 

It prevents the cracking of glass apparatus during heating. 

It also helps in the uniform distribution of heat.

The joint probability of the independent events J and K is equal to P(J) x P(K).

Let the C.P be Rs.100 and S.P be Rs.x, Then 

The profit is (x-100)

Now the S.P is doubled, then the new S.P is 2x

New profit is (2x-100)

Now as per the given condition; 

=> 3(x-100) = 2x-100

3x - 300 = 2x - 100

3x - 2x = -100 + 300

x = 200

Then the Profit percent = (200-100)/100 = 100

Hence the profit percentage is 100%

"Planning is usually interpreted as a process to develop a strategy to achieve desired objectives, to solve problems, and to facilitate action"

Nature of Planning 

The nature of planning can be understood by examining its four major aspects. They are;  

(i) It is a contribution to objectives, 

(ii) It is primacy among the manager’s tasks. 

(iii) It is pervasiveness, and 

(iv) The efficiency of resulting plans.

The correct option is: (b) 2 only

Explanation:

INS Tarkash is a Talwar–class multirole stealth frigate constructed by Indian Navy

The correct option is: (a) 1 and 2 only

Explanation:

The old 2001 policy mandated that ISRO could release only data upto 5.8 meter resolution.

The correct option is: (b) 2 and 3 only

Explanation:

 4K TV is an Ultra high definition television. UHDTV, has horizontal resolution on the order of 4,000 pixels. Since its screen is too big the HD gives blurred images.

The correct option is: (d) 1, 2 and 3

Explanation:

High-Frequency Active Auroral Research Programme (HAARP) is an ionospheric research programme and the main purpose is to investigate the potential for developing ionospheric enhancement technology for radio communications and surveillance.

The correct option is: (d) 1, 2 and 3

Explanation:

New Super Wi-Fi will support 802.11 ad standard, it can send data to the length of 1-2 GB and would function at the speed of 7 gigabits per second.

The correct option is: (c) Both 1 and 2

Explanation:

‘Greenware’ is completely free of both hazardous PVC and BFR and its manufacturing can be a special action like replacing all standard light bulbs with CFLs or a more general application to live more ecologically.

(c) determining the presence and location of objects with radio waves.

Radar is a system that uses radio waves for object deflection. It determines the range, altitude, direction, or speed of objects

(d) Trishul — A short-range surface to surface missile

Akash is a medium-range mobile surface–to– air missile. Nag is an antitank missile by DRDO. Pinaka is a multiple rocket launcher produced for Indian Army by DRDO while Trishul is a missile system of a short range surface to–air missile as a part of the Integrated Guided Missile Development Program.

(a) To input text and numbers and send commands to the computer.

A computer keyboard, a typewriter-style device having a particular arrangement of buttons or keys, is a main input device. It inputs text, numbers and sends commands to the computer.