ठोस अवस्था - L1 | doubt session | Class 12 रसायन विज्ञान | Ravi Sir | 7 PM | Doubtnut

Acids,Bases and pH - Class 10 Science | 7 PM Master Class By Vipin Sir

Ravi is 7 ranks ahead of sumit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start? 1) 14th 2) 15th 3) 16th 4) 17th 5) None of these

Direction: A vehicle manufacturing company sells three types of vehicles, 4 wheelers, 3 wheelers and 2 wheelers in two different sessions 2010-2012 and 2013-2015. In the first session, the ratio of 4 wheelers, 3 wheelers and 2 wheelers sold is 1 : 2 : 2. Also, 3 wheelers sold in this session is 20% more than the same type of wheelers sold in the second session. The total vehicles sold in session 2010-2012 is 12 lacs. The 4 wheelers sold in 2013-2015 is 20,000 more than the 2 wheelers sold in 2010-2012. The 2 wheelers sold in 2013- 15 are 12.5% more than that of sold in 2010-12. If the ratio of the number of cars (4 wheelers)sold in session 2016-2018 to the number of cars sold in 2010-2012 is 7 : 8, then calculate the approximate average cars sold in all three sessions.

The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

The marks obtained by 40 students of class VIII in an examination are given below: 18,8,12,0,8,16,12,5,23,2,16,23,2,10,20,12,9,7,6,5,3,5, 13,21,13,15,20,24,1,7,21,16,13,18,23,7,3,18,17,16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included).

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?

In a class of 36 students Ravi's rank from the top is 12. Radhika ranks three places above Ravi. What is Radhika's rank from the bottom? 1) 27 2) 28 3) 26 4) 29 5) None of these

study the following information carefully and answer the questions given below it. An exhibition is open for pubic since 9 am till 3 pm and again since 4 pm till 10 pm in a day. There are 12 batches of 1 hour each. The entry ticket bears a pass code made up of seven words, which changes every hour following a particular rule. The pass codes for 4 pm to 10 pm are same as those for respective hours during 9 am to 3 pm i.e., the pass code for 4 pm to 5 pm is same as that of 9 am to 10 am and so on. Following is an illustration of the code and steps of rearrangement for subsequent clock hours. First batch : 9 am to 10 am (4 pm to 5 pm) Pass code : dig more and you will find water Second batch : 10 am to 11 am (5 pm to 6 pm) Pass code : and dig find you water will more Third batch : 11 am to 12 noon (6 pm to 7 pm) Pass code : find and will you more water dig and so on. If the pass code for 5 pm to 6 pm is 'out in above over the field end', what will be the pass code for 1 pm to 2 pm ?