Feeling of a First Bencher | CBSE Class 7 | Arisha Ma'am #shorts

Arrhenius Equation|| Variation OF Rate Constant and Equilibrium Constant with Temperature||Effect OF Catalyst|| Pseudo First Order Reaction||Class Illustrations with Short Tricks||Discussion OF DPP 4

In this section each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled P, Q, R and S. You are required to find the proper sequence of the four sentences S1 :Some students may feel that fast readers do not understand as much as slow readers. S6 :This statement, however, needs to be made with caution P :Some slow readers will have good comprehension and others poor. Q :A quick glance at the scores will show that fast readers sometimes have very good comprehension and sometimes poor. R : This fi,tllacy can easily be disproved when you give the first reading test in a class. S : In short, there is little relation between reading speed and comprehension. The proper sequence should be

Solve the following: (a) The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. What is the lowest score? (b) In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is 180°). (c) Smita’s mother is 34 years old. Two years from now mother’s age will be 4 times Smita’s present age. What is Smita’s present age? (d) Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?

The probabilities of a student getting first class or second class or third class in an examination are (2)/(7) , (3)/(5) ,(1)/(10) respectively . The probability that the students fails is .