Can you find all the numbers? U0001f9d0| Everyday Maths | CBSE Class 7 | Seema Mam #shorts #ytshorts

Study the double bar graphs given belwo and answer the following questions (a) Which sport is liked the most by Class VIII students? (b) How many students of Class VII like Hockey and Tennis in all? (c) How many students are there in Class VII? (d) For which sport is the number of students of Class VII less than that of Class VIII? (e) For how many sports students of Class VIII are less than Class VII? (f) Find the ratio of students who like Badminton in Class VII to students who like Tennis in Class VIII.

In the class of 100 students, the number of students passed in English is 46, in Maths is 46 and in Commerce is 58. The number who passed in English and Maths is 16, Maths and commerce is 24 and English and commerce is 26, and the number who passed in all subjects is 7. Find the number of the students who failed in all subjects.

Some letters are given below in the first line and numbers are given below them in the second line. Numbers are the codes for the alphabets and vice-versa. Choose the correct letter-code for the given set of numbers. {:(E, M, K, B, Z, Q, Q, U, D, J), (5,9,1,6,4,8,2, 0, 7, 3),(,,4,2,9, 7, 5, 3,,):}

In a school, students must take at least one of these subjects: Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics only and 5 take Maths and Chemistry only. Of these 50 students, x take Maths only, x take Physics only and x + 3 take Chemistry only. Draw Venn diagram, find x, and hence find the number taking Maths.

The sum of all 4 digited numbers that can beformed by taking the digits from 0,1,3,5,7,9 is

On a Saturday night, 20%of all drivers in U.S.A. are under the influence of alcohol. The probability that a drive under the influence of alcohol will have an accident is 0.001. The probability that a sober drive will have an accident is 0.0001. if a car on a Saturday night smashed into a tree, the probability that the driver was under the influence of alcohol is 3//7 b. 4//7 c. 5//7 d. 6//7

^238U decays to ^206(Pb) with a half-life of 4.47xx10^9 y.This happens in a number of steps .Can you justify a single half-life for this chain of processes? A sample of rock is found to contain 2.00mg of 238U and 0.600 mg of 206(Pb) .assuming that all the lead has come form uranium ,find the life of the rock.