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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 _______.

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

first graph shows the number of students (boys and girls in thousands) in Grade 1 to Grade 5. पहला आरेख ग्रेड 1 से लेकर ग्रेड 5 तक छात्रों की संख्या (लड़के और लड़कियाँ, हज़ार में) को दर्शाता है। And the bar graph below shows the percentage share of five schools in the total students studying in that class. और नीचे दिया गया दंड आरेख उस कक्षा में पढ़ रहे कुल छात्रों में पाँच विद्यालयों की प्रतिशत हिस्सेदारी को दर्शाता है। Based on the information, if the boys to girls ratio in school D is 3:1, then the number of boys studying in school D is: दी गयी जानकारी के आधार पर, यदि विद्यालय D में लड़कों और लड़कियों की संख्या का अनुपात 3:1 है, तो विद्यालय D में पढ़ने वाले लड़कों की | संख्या कितनी है?

Previous Class Revision|NCERT प्रश्नावली 7.5 का हल भाग-2|सारांश

The average weight of 60 students in a class is 56.4 kg. If 12 students having average weight of 59.5 kg leave the class and 15 students having average weight 54kg join the class, then what is the average weight ( in kg) of the students in the class (correct to one decimal place)? किसी कक्षा में 60 छात्रों का औसत वज़न 56.4 किलो ग्राम है | यदि 59.5 किलो ग्राम औसत वज़न वाले 12 छात्र कक्षा से चले जाते हैं और 54 किलो ग्राम औसत वज़न वाले 15 छात्र कक्षा में आ जाते हैं | कक्षा में छात्रों का औसत वज़न (किलो ग्राम में ) ज्ञात करें | (एक दशमलव स्थान तक )

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?