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1. Which number are greater 8 400 and 4 800 2. Which number is smaller 9 300 and 3 600 3. Arrange the following in ascending order 3 1200 , 4 800 , 2 600 , 1 200 4. 10÷5(6×4) 5. If we increase the number by 20% and decrease number by 20% what percent the number will change? 6. Sum of two numbers is 20 and the sum of their square is 250 find the number? 7. Sum of two numbers is 37 and their difference is 23 find both number. 8. What is sum of first five positive prime number? 9. What is the ratio of side of square and their diagonal? 10. In what time the money become triple at simple interest at rate of 8% per annum?                        Thanks for watching Enhance your knowledge 

It is very wondering in our childhood to see that cold water come out form the glass when we put it in the outer atmosphere but the question is arise that how is it possible? Is there any whole is glass? Answer is absolutely no.  There is no any whole in the glass but when we put the cold water in the atmosphere the humidity (water droplets)   of atmosphere become cool when they contact with glass and when we see the glass we feel that water is come out form the glass but reality is something else. The reality is water not comes out form the glass but the water droplets seen on the glass the outer humidity.                  To know the question asked in various competitive exam please  CLICK HERE Thanks for watching Enhance your knowledge 

1. How many number between 5 and 125 which is divisible by both 7 and 3 2. The ratio of three angle of triangle of 4:4:1 find the smallest angle. 3. A profit of 20% made after giving 15% discount. if the marked price 2760 find cost price. 4. The mark price of an article is 6000 and 10% discount are given. Shopkeeper give another discount to buyer and sell the article in 4050. Find another discount. 5. Three number are in ratio 4:3:1 and sum of their square is 1664. Find all number.                  Check you knowledge about space and moon please   CLICK HERE 6. The average is 7 consecutive number is 21. if previous two number is also included what will the new average. 7. A man sold 450 chair and gain profit of sell price of 50 chair. Find profit percent. 8. If the number is increased by 25%. How much percent it must be reduced to retain the same. 9. Find the Simple interests on 12000 at the rate of 2% for 2 year. 10. which number is neither prime nor comp

How many zero form the end 2 13 × 5 10 The sum of the square of two odd constitutive numbers is 130. Find both numbers. The length of diagonal of rhombus is 12 cm and 20 cm find Area. If the marked price of a article is 720 if 30% discount is given. Find sell price. If the marked price of an article is 700 and 20% discount is given and get profit of 40% find cost price. Two number are in ratio 7:11 and their difference is 48. Find smallest number. Average is 10 numbers is 21. If one number is excluded average is 23 find excluded number. Find the area of trapezium whose parallel side 11 and 25 cm and non parallel side are 13 and 15 cm. 6A=11B=7C Then find A:B:C Find the perimeter of rhombus if the two diagonal are32 cm and 24 cm                                    For super 30 science question please  CLICK HERE        

                                     To take study notes of sound part 2 please  CLICK HERE                                   If you not take the study notes of sound part 1  CLICK HERE Thanks for watching  Enhance your knowledge 

1. Find the two digit largest number which is exactly divisible  by 6 and 5  2. 34P8 is exactly divisible by 9 find the smallest value of P.  3. If the surface area of cube is 294 cm square find the volume of cube.  4. If the mark price is 35% more than cost price and 40% discount is given find the loss percent? 5. The ratio of income of Deepak and Alok is 4:9 and there expenditure ratio is 1:3 if both save 9000 per months find the salary of both Deepak and Alok? 6. which least number is subtracted in 300 to become divisible by 9.  7. If 123457Y is divisible by 8 find the value of Y.  8. Rahul is twice good as sumit and together both can do the work in 36 day find the time in which sumit complete the work.  9. If the diagonal of square is 10 cm find the area of square.  10. If the mark price of article of 750 and sell in 600 rupees find the discount percent.   Thanks for watching  Enhance your knowledge 

                                           To know space and atmosphere in Hindi part 2 please visit  CLICK HERE Hearty thanks to Rstv and vigyan parsar for this special show Thanks for watching Enhance your knowledge  

TO GET THE STUDY NOTES OF CHAPTER- SOUND (PART-1)  CLICK HERE

CLASS 8 ·          The price of a shirt is 440 and shopkeeper sell the shirt in 396 find the discount percent? ·          If   three successive discount is given 5% and 10% and 20% on 1000 rupees find total discount ·          If the 65% of a number is 21 less than 4/5 of that number find that number? ·          If a man walks with speed of 6km/h and cross the bridge in 20 minutes find the length of bridge. ·          Write about chandrayaan-2 in 100 words.                                                                 CLASS 9            When x 51 +51 is divide by (x+1) find remainder           Find the area of triangle whose length of side is 25 cm, 7 cm and 24 cm.           A 100m long train moving with speed of 30km/h find the time In second in which train cross bridge           Write about chandrayaan-2 in 100 words.           Find the value of (1.7) 3 +(3.9) 3 -(5.6) 3                                                                              

The earth is very important for us to understand the inner part of earth is very difficult but our scientist made them easy check your knowledge about the earth inner atmosphere and rock please  Click here   It is noted that all question very is very important for competition point of view  Thanks for watching  enhance your knowledge 

  To Know your star and atmosphere by Hind documentary part 1  please   Click here   Video credit goes to Rstv and Vigyan Parsar thanks you both for special show Thanks for watching  enhance your knowledge 

1. What is the distance from earth to sun? 2. Name the only natural satellite of earth? 3. What is value of gravity of earth? 4. Name the largest satellite of universe? 5. Name the smallest satellite of universe? 6. When and who was the first man went to moon? 7. How many astronauts land on moon? 8. How many instruments are used in chandrayaan-2 9. What is the direction and of rotation and revolution of moon? 10.How much time taken by moon to complete rotation and revolution? 11.Why earth looks brighter from moon? 12.Chandrayaan-2 will land on which part of moon? 13.How much time Chandrayaan-2 will take to reach on moon? 14.Name the first satellite launch by ISRO and when 15.Who is known as ”father of Indian space research”. 16.Who establish the ISRO. 17.When was first rocket launcher station established in India? 18.Is there is global warming on moon? 19.What was the achievement of cha 20.Name the fifth largest satellite of universe? න THANKS FOR WATCHING

CLASS 9 1.  A force of 1000 Newton is applied on a 25 kg mass for 5 seconds. What would be its velocity? 2. A force of 200 N is applied on a body and its velocity changes from 5m/s to 10m/s in a second.     What is the mass of the body? 3. What is SONAR? How it is work? 4.  A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? (Take g = 9.8m/s2 ) 5.  Calculate the number of mole in 90 g of H2O and also calculate the number of particles contains by it? CLASS 8 1. Name the five petroleum substance? 2. Explain the process of formation of petroleum. 3. A second hand Tv is for Rs 2500. And then Rs 500 was spent on its repair and sold for Rs 3300. Find profit/loss percent. 4.  Vanshika got 150 out of 200 and Sakshi got 120 marks out of 180. Whose performance is better? 5. The perimeter of a rectangular swimming pool is 154m. Its length is 2m more than twice its breadth. What are the length and the breadth of the pool?

1. Write the laws of reflection? 2. Why myopia happens? How can it be cured? 3. Why hypermetropia happens? How it can be cured? 4. What is good fuel? 5. Write benefit and limitation of thermal power plant? 6. Write the benefit and limitation of solar power plant? 7. Write the use of concave, convex and plane mirror? 8. Write the name of parts of eye and write its function. 9. Why sky looks black form the space? 10. Why sky looks blue form earth? 11. Why red light use in traffic singles for danger sign? 12. Write the laws of refraction and also write snell’s law? 13. Why sun became two minutes before and sunset two minutes after? 14. Find the power of lens if the focal length of eye is 50 cm. 15. Find the focal length of concave mirror if the image distance is 5 cm and object distances of 5 cm. write the properties of image. 16. Write the mirror formula and lens formula? 17. If the height of object is 25 cm and height of image is 50 cm find the magnification. 18.

Here 30 most important question of science is available please read and enhance your thought and search your answer.  1. Name the condition necessary for combustion? 2. Which substance is used is fire extinguisher?  3. Name the fossil fuel which is formed by tree under the land under high pressure and temperature?  For next question please  click here   Thanks for watching   Enhance your knowledge 

CLASS 8 If we increase the a number by 20% and then decrease by 20% how much percent number will change.  If there are two successive 30% and 20% discount on computer set cost 30000. what must pay for them.  How coal and petroleum is obtain  What is the simple interest on principle 2400 at the rate of 5% per anumm for 2 months.  If Rohan sold a pen on 80 rupees and get profit of 10% find Rohan’s cost price.  The ratio 7 : 15 is equal to how much percent. CLASS 9  What is sound.  Convert 40 0 c into F and 100 0C into kelvin  Convert the following 126km/h into m/s and 90 m/s to km/h  Write the SI unit of the following 1. force 2. Momentum 3. pressure 4. acceleration 5. velocity 6. quantities of substance  It the sum of the two angle of triangle is equal to third angle show the given triangle is right angle triangle.  Define the following 1. Frequency 2. wavelength 3. pitch 4.longitudinal wave CLASS 7  What is compliment of 40 0  What is the supple