dhoran 8 vigyan paper 2022,std 8 science paper solution 2022,ધોરણ 8 વિજ્ઞાન વાર્ષિક પેપર સોલ્યુશન 22

Mohan took five papers in an examination, where each paper was of 250 marks. His marks in these papers were in the ratio 6 : 8 : 10 : 12 : 15. In all papers together, Mohan obtained 70% of the total marks, Then find the number of papers in which he got more than 80% marks.

There are 8 questions in a paper and a student have to attempt 5 questions. How many ways it can be done if (i) there is no restriction? (ii) first two questions are compulsory. (iii) at least 3 questions are compulsory out of first 5 questions?

The results of an examination in two papers A and B for 20 candidates were recorded as follows.8passed in paper A,7 passed in paper B,8 failed in both the papers A and B. If one is selected at random,the probability that the candidate has failed in A or B is

Draw the Cartesian plane on a graph paper and plot the given points. F(8,0)

Q.22 write three solutions for the equation 7x-8y=13

The given figure shows a rectangle ABCD of 12 cm length and 8 cm width, drawn on grid paper. Each square grid on the gird paper has a side of 1 cm and an area of 1 cm^(2) .The area of rectangle ABCD is

Sunny cuts off (3)/(8) of a paper strip.What portion of the strip is left?

A student took five papers in ail examination, where hill marl were same on each paper. Her marks in these papers were in the proportion of 6:7:8:9:10. In all these papers together, the candidate obtained 60% of the total marks. Then the number of papers in which she got more than 50% marks is 2 b. 3 c. 4 d. 5 e. none of these

In a survey of 40 persons about their news paper reading habits ,it was found that all of them either read news paper H or I or T, 3 of them read all the three news papers , 8 of them read H and I,7 of them or I but not T is 25, number of persons who read either H or T but not I is 13, find the number of persons who read (i) H e number of persons who read (i) H only (ii) I only (iii) T only