ऐल्डिहाइड, कीटोन एवं कार्बोक्सिलिक अम्ल | JEE | Class 12 रसायन विज्ञान | 2 PM Class By Ram Sir |L8

एल्डोल संघनन|ऐल्डिहाइड, कीटोन एवं कार्बोक्सिलिक अम्ल|क्रियाविधि|Cross एल्डोल|अन्त अणुक ऐल्डॉल अभिक्रिया|OMR

D and F Block Elements Lecture 2 - Potassium Permanganate | JEE/NEET/Class 12 Chemistry Revision

D and F Block Elements Lecture 2 - Potassium Permanganate | JEE/NEET/Class 12 Chemistry Revision

In class 12 there are 8 students. In class 11 there are 6 students .In class 10 there are 5 students . Total ways of selecting 10 students , such that there are at least 2 students from each class and at most 5 students from 11 students of Class 10 and 11 combined is 100k. Then find value of k

There are 5 students in class 10, 6 students in class 11 and 8 students in class 12. If the number of ways, in which 10 students can be selected from them so as to include at least 2 students from each class and at most 5 students from the total 11 students of class 10 and 11 is 100 k, then k is equal to _______.

Railway fares of 1st, 2nd and 3rd class between two stations were in the ratio of 8 6 : 3. The fares of 1st and 2nd class were subsequently reduced by 1/6a n d1/(12) respectively. If during a year the ratio 12 between the passengers of 1st, 2nd and 3rd classes was 9 :12 : 26 and the total amount collected by the sale of tickets was Rs, 1088, then find the collection from the passengers of 1st class. R s .260 b. R s .280 c. R s .300 d. R s .320

The following data : 2, 5, 15, 25, 20, 12, 8, 7, 6, 16, 21,17, 30, 32, 23, 40, 51, 15, 2, 9, 57, 19, 25 is grouped in the classes 0 –5, 5 –10, 10 –15 etc. Find the frequency of the class 20 –25.