Students and Teachers Forum

1. If  x2 +2 = 3  23 + 3 - 23   then prove that 3x3 + 9x – 8 = 0 .

or, 3x3 + 9x  - 8 = .....

2. xm. xnm - n . xpxnn + p . x px m p + m

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3. In your view, what is education?

In my opinion, education is the development of the abilities of the mind.  It is a process which develops our mind, i. e. learning to know. It is a continuous process because it starts from the cradle and ends with the .....

4. The volume of the prism shown in the figure is 540 cm3 . Find the value of x.

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5. Write down the roots of a quadratic equation ax2  - bx = 0.

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6. Is formula equation and chemical equation same?

In word equations, we use words to show what happens using words in a chemical reaction.

eg: Carbon + Oxygen = Carbon Dioxide

In a chemical equation, we use chemical symbols to show what happens in a chemical reaction.

eg: C + O2 = .....

7. Solve:
55x - 4  ×  P 4x -3  = 52x - 3  ×  P x -2 

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8.  Factorize : 
11+ax-y + 11+ay-x

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9. What is opposite of teach?

The opposite words of teach are learn, conceal, confuse, mislead .....

10. विकारी पद र अविकारी भनेको के हो ?

रूप परिवर्तन हुने शब्द विकारी हुन् भने रूप परिवर्तन नहुने शब्द अविकारी हुन् । .....

11.

y° + 100° + 40°  = 180° [ Sum of angles of a triangle ] or, y°  + 140°  = 180° or, y°  = 180°  - 140° Therefore, y°  = 40° .....

12. Calculate the size of angles marked with letters.

x° + 70° + 65°  = 180° [ Sum of angles of a triangle ] or, x°  + 135°  = 180° or, x°  = 180°  - 135° Therefore, x°  = 45° .....

13. What is computer?

You must have seen a computer in your home or school. As you know computer consist of may parts. Monitor, CPU, Keyboard. Mouse, .....

14. Simplify:
3 + 3 ÷ 3 - 2

= 25 ÷ 100 - 2 + 44 = 0.25 - 2 + 44 = - 1.75 + 44 = .....

15. How to draw an angle?

- Draw a straight line( i.e. an arm of the angle ) - Place a dot at one end of the arm. This dot represents the vertex of the angle. - Place the centre of the protractor at the vertex dot and the baseline of the protractor along the arm of the .....

16. Diagonals AC = 5.2 cm, BD = 6.2 cm and they bisect each other making an angle of 60∘.

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17. My brother gave me Rs.100 for 10rupees candy.How much should I give to my brother?

Given, My brother gave me = Rs. 100 Price of  a candy = Rs. 10 I should give to my brother = Rs. 100 - Rs. .....

18. what is diagonal matrix?give examples

 A diagonal matrix is a matrix in which the entries outside the main diagonal are all zero. The term usually refers to square matrices. An example of a 2-by-2 diagonal matrix .....

19. व्याख्या गर्नुहोस:

मादलको तालबिना बन्दुकको नाल पनि फितलो हुन्छ ।

मादलको तालबिना बन्दुकको नाल पनि फितलो हुन्छ । मादल हाम्रो राष्ट्रिय बाजा हो । .....

20. What is the baby of a dog called?

The baby of a dog is called pup or puppy or .....

21. Discuss atomic model of aluminium.

                      Fig: Atomic model of .....

22. ABCD is a quadrilateral with opposite angles supplementary.
Prove that:

a. cos A + cos B + cos C + cos D = 0
b. tan A + tan B + tan C + tan D = 0

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23. देश र जनताको मुक्तिको लागि आङ साङ सुकिले के कस्तो योगदान दिइन ? बर्णन गर्| 

आङ  बर्माको राजदूतमा नियुक्त भएपछि सन् १९६० मा उहाँ भारतमा आउनुभएको थियो । स्नातकसम्मको .....

24. What is pi(π)?

Pi is the sixteenth .....

25. रेखाङकित शब्दको पद्वर्ग छुट्टाउनु :
म यहाँ सामाजिक सोच मा परिवर्तन ल्याउने कुरा गरेर कसैलाई भ्रम मा पार्न चाहन्न तापिन समाजलाई प्रभाव पार्ने कुराहरुचहि भन्न चाहन्छु।
रेखन्कित शब्द :
म
सामाजिक
चाहन्न
तापनी
समाज
चाहि

 सामाजिक = विशेषण   चाहान्न = कृयापद   तापनि= संयोजक   समाज = नाम  चाहिँ = निपात   म = .....

26. कुनै परिक्षामा  40 %  विद्यार्थी गणितमा मात्र र  30 %  विज्ञानमा मात्र उत्तीर्ण थिए । यदि  10 % विद्यार्थी दुबै विषयमा अनुतीर्ण थिए भने

(क) दुबै विषयमा कति प्रतिशत उत्तीर्ण थिए ?
(ख) गणितमा कति प्रतिशत विद्यार्थी उत्तीर्ण थिए ?
(ग) प्राप्त नतिजालाई भेन चित्रमा प्रस्तुत गर्नुहोस् । 

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27. Construct a quadrilateral PQRS in which PQ = 3.5 cm, QR = 2.5 cm, RS = 4 cm, <Q = 75˚, <R = 120˚.

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28. Construct a trapezium ABCD in which AB//CD, AB = 7 cm, BC = 5 cm, AD = 6.5 cm and <B = 60˚.

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29. Define trade diversification.

Trade diversification is defined as the process of producing varieties of products in the market. It is the state of variation in the consuming goods which the consumers can have the ample of choices. In other words, it can be defined as the .....

30. Construct a rhombus MNOP in which MN = 6 cm and <MNO = 75˚.

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31. If X and Y are two overlapping subsets of a universal set U, Write the relation between n(Q),n( P⋂Q) and n(only Q).

Hello Binayak, please check your question once and post it .....

32. If P and Q are two overlapping subsets of a universal set U,Write the relation between n(P),n(P ⋂ Q) and n(only Q).

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33. If A and B are to overlapping subsets of a universal set U, write the relation between n(U), n(AUB) and n(AUB)'.

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34. Construct a parallelogram ABCD in which AB = 5.2 cm, BC = 4.2 cm and height 3.6 cm.

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35. Construct a parallelogram PQRS in which QR = 5 cm, <QRS = 120º and PQ = 4.8.

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36. Construct a rectangle PQRS in which QR = 3.6 cm and diagonal PR = 6 cm.

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37. Construct a square ABCD in which AB = 5 cm.

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38. Define transpiration?

Thus, transpiration means the loss of water of water in the form of the water vapour from the surface of aerial parts of the plant is called transpiration. The aerial parts like stem, leaves etc. but especially leaves transpire .....

39. If n(A)= x,n(B)= y and n(A∩B)= z, show this information in a Venn-diagram and show that n(AUB) = n(A) + n(B) - n(A∩B).

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40.
A rectangular court is twice as long as its breadth and its perimeter is 540 m. Find the number of bricks of size 20 cm × 12 cm to pave the court. If the rate of cost of bricks is Rs 950 per 1000, find the cost of paving the court.

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41. Solve :
72x+1   X   52x-1 = 7/5

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42. If ax = by and ay = bx , show that x = y. 

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43. If  x =  a 1 3 – a – 13 , show that x3 + 3x = a - 1a

Question 6, d) Similarly substitute the value of P in given equation and .....

44. Why is the colour of plants green?

The color of plants is green due to the presence of the green pigment in their leaves called as chlorophyll. This pigment helps the plants to absorb light energy from the sun to make .....

45. You did not see the house (into affirmative)

You saw the .....

46. Affirmative.

Affirmative sentences are sentences that give a positive sense, as opposed to negative sentences. They tell us what something or something has, does, or .....

47. Add 3+3+5+67

3+3+5+67 = .....

48. Skull is bone....... 

The skull is a bony structure that forms the head in most vertebrates and provides a protective cavity for the brain.   It supports the structures of the face. As well as protecting the brain, the skull fixes the .....

49. In the given figure, PQR is an equilateral triangle in which  PQ=QR=RP=x and PS⊥QR.
Prove that cos300 = 3
2

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50. Skull is bone of............

The skull is a bony structure that forms the head in most vertebrates and provides a protective cavity for the brain.   It supports the structures of the face. As well as protecting the brain, the skull fixes the distance between the .....