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In a class Seema is 10th from the top and Bablee is 20th from the bottom. Raju is 11 ranks below Seema and 21 ranks above Bablee. How many students are in the class if list includes all the students of the class? 1) 60 2) 61 3) 62 4) Data inadequate 5) None of these

If 1-5 , 6 -10 , 11-15 , 16-20, ..., are the classes of a frequency distribution , then the lower boundary of the class 11-15 is "_______" .

Tabulate , the given data by taking Class intervals : 1-10 , 11- 20 , 21- 30 , 31- 40 Data : 9 , 10 , 8 , 6 , 7 , 4 , 3 , 2, 16 , 28 , 22 , 36 , 24 , 18 , 27 , 35 , 19 , 29 , 23 , 34.

The average of 24 numbers is 56. The average of the first 10 numbers is 71.7 and that of the next 11 numbers is 42. The next three numbers (i.e 22nd ,23rd and 24th) are in the ratio 1/2 : 1/3: 5/12 . What is the average of the 22nd and 24th numbers? 24 संख्याओं का औसत 56 है | पहली 10 संख्याओं का औसत 71.7 है तथा अगली 11 संख्याओं का औसत 42 है| अगली तीन संख्याएँ ( अर्थात 22वीं, 23वीं तथा 24वीं ) 1/2 : 1/3: 5/12 के अनुपात में हैं | 22वीं तथा 24वीं संख्याओं का औसत कितना है ?

Blocks shown in figure have been placed on a smooth horizontal surface and mass of (n + 1)^(th) block is (1)/(20) times the mass of n^(th) block (where n=1,2,3,4,…. ). The first block is given an initial velocity u towards the second block. All collision are head on elastic collisions. If u = 10 m//s then how many blocks must be kept so that the last one acquires speed equal to or greater than the escape speed (=11.0 km s^(-1)) [Take log_(10)((40)/(21))=0.28 and log_(10)(11)=1.04 ]

Consider the following question and decide whether any of the statements in the given statement are adequate to answer that question. What is the total number of students in the class? Statements: 1. Mr. X’s rank was 15th from the top in the class. 2. Mr. X’s rank was 26th from the bottom in the class.