संबंध एवं फलन - L7 | फलनों के परिसर (भाग - 2 ) | JEE | Class 12 गणित | Amar Sir | 8 PM | Doubtnut

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?

The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?

There are twelve friends A, B, C, D, E, F, G, H, I, J, K and L who invested money in some business in the ratio of 1 : 2 : 3 : 4: 5 : 6 : 7 : 8 : 9 : 10 : 11 : 12 and the duration for which they invested the money is in the ratio of 12 : 11 : 10 : 9 : 8 : 7 : 6 : 5 : 4 : 3 : 2 : 1 respectively. Who will get the maximum profit at the end of the year ?

A milkman uses three containers for selling milk, their capacities being 40L, 30L and 20L respectively. He fills respectively 87.5%, 80% and 90% of the containers with a mix of milk and water in the ratios, 3:2, 5:1 and 7:2 respectively. What is the ratio of total quantity of milk to that of water carried by him ? एक दूध वाला दूध बेचने के लिए तीन बर्तनों का इस्तेमाल करता है, उनकी धारिता क्रमशः 40 ली०, 30 ली० और 20 ली० है | वह बर्तनों का 87.5%, 80% और 90% भाग दूध और पानी से भरता है जो क्रमशः 3 : 2, 5 : 1 और 7 : 2 के अनुपात में हैं | उसके पास मौजूद दूध और पानी की कुल मात्रा का अनुपात ज्ञात करें |

Class 12 Maths | Chapter 1 | संबंध एवं फलन | Important Questions | Quick Revision

the daily minimum temperatures in degrees Celsius recorded in a certain Arctic region are as follows: -12. 5 ,-10. 8 ,-18. 6 ,-8. 4 ,-10. 8 ,-4. 2 ,-4. 8 ,-6. 7 ,-13. 2 , -11. 8 ,-2. 3 , 1.2 , 2.6 ,0,-2. 4 ,0, 3.2 , 2.7 , 3.4 ,0,-2. 4 ,-2. 4 ,0, 3. 2 , 2.7 , 3.4 ,0,-2. 4 ,-5. 8 ,-8. 9 ,-14 ,6,-12. 3 ,-11. 5 ,-7. 8 ,-2. 9 Represent them as frequency distribution table taking -19. 9\ to-15 as the first class interval.

The runs scored by two teams A and B on the first 60 balls in a cricket match are given below: "N u m b e r o f b a l l s""T e a m A""T e a m B"1-6 2 5 7-12 1 6 13-18 8 2 19-24 9 10 25-30 4 5 31-36 5 6 37-42 6 3 43-48 10 4 49-54 6 8 55-60 2 10

A ,\ B ,\ C are three sets of values of x : A :2,\ 3,\ 7,\ 1,\ 3,\ 2,\ 3, B :7,\ 5,\ 9,\ 12 ,\ 5,\ 3,\ 8 C :4,\ 4,\ 11 ,\ 7,\ 2,\ 3,\ 4 Which one of the following statements is correct? M e a n\ of\ A=\ Mod e\ of\ C M e a n\ of\ C=M e d i a n\ of\ B M e d i a n\ of\ B=Mod e\ of\ A M e a n ,\ M e d i a n\ a n d\ Mod e\ of\ A\ a r e\ e q u a l

{:(A , B , C , D , E , F , G , H , I , J , K , L , M , N , O , P , Q , R ,S , T ,U , V , W ,X , Y , Z), (1 ,2 , 3 , 4 ,5, 6 , 7,8,9,10 , 11 , 12, 13, 14, 15 , 16 , 17 , 18 , 19, 20 , 21 ,22 , 23 , 24 , 25 , 26):} JLNP: OMKI :: SUWY:?