std 7 science ch 14 swadhyay pothi ,dhoran 7 vigyan swadhyay pothi , dhoran 7 swadhyay pothi vigyan

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. How many pairs (Science and Literature book respectively) are placed together on the shelf?

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. How many pairs (science and Geography book respectively) are placed together on the shelf?

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. What is the position of History book which comes immediately after science book ?

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. The last book of History is placed at what position from right?

Many of us believe that science is something modern ...(1)... the truth is that ...(2)... has been using science for ...(3)... very long time. However, it has ...(4)... a greater effect on human lives in the last 25 ...(5)... 30 years than in the hundreds of years ...(6)... the invention of the plough. The ...(7)... gifts of science have modern life ...(8)... and comfortable. But science has ...(9)... the same time created new problems. one of these which may become ...(10)... in the years to come, is ...(11)... of "jet-lag". With the coming of modern jets. flying at more than 900 km/hr, the world ...(12)... very small indeed. Today if you ...(13)... New Delhi at 4.00 in the morning, you ...(14)... eat an early breakfast in the sky ...(15)... kabul, and be in London by about 1.00pm. Solve 1

Study the following information carefully and answer the questions given below: Following are the conditions for admitting students for Graduate course in Architecture in a college: The student must (i) be at least 17 years old as on 1.7.2006. (ii) have secured at least 50 percent overall marks in XII Std final examination. (iii) have secured at least 60 percent aggregate marks in Physics, Chemistry and Mathematics in XII Std. final examination. (iv) have secured at least 55 percent marks in the entrance examination. (v) pay Rs. 60,000 annual fee at the time of admission. If a student satisfies all the above conditions EXCEPT- (A) at (iii) above, but has secured at least 70 percent overall marks in XII Std final examination, ms/her case is to be referred to the Principal of the college. (B) at (v) above, but can pay at least 60 percent of the annual fee at the time of admission and the remaining amount within six months, his/ her case is to be referred to the Vice-Principal of the college. In each ofthequestionsgiven below, detailed information about one student is given. You have to take one of the following courses ofaction based on the information provided and the above conditions and sub-conditions. You are not to assume anything other than the information provided in each question. All these cases are given to you as on 1.7.2006. Shikha Gupta has secured 60 percent average marks in Physics, Chemistry and Mathematics and 58 percent overall marks in XII Std final examination. She was born on 14th February 1988. She has secured 60 percent marks in the entrance test. She can pay Rs. 38,000 at the time of admission and the remaining amount within two weeks of admission.

CH. 14 STATISTICS Q1 Class 0-8 8-16 16-24 24-32 32-40 Frequency 10 12 26 9 15 e mean of above data by: () Direct method () Assumed mean method (ii) Step deviati iop metod. Q2 The following distribution shows the daily pocket allowance of children of a locali ty. The mean pocket allowance is Rs 20. Find the missing frequency Daily Pocket 0-20 20-40 40-60 0-80 80-100 No. Of Children 7 10 9 13 Q3. The following table shows age distribution of persons in a particular region. Find the: (0) mean age (i)modal age (ili) median age Age? Below!0 Below20 Below30 Below 40, Below 50 Belo No, persons ? 250 190 100 40 15 4 Arithmetic mean of the following frequency distribution is 50. Find the missing frequencies C.I. ? 0-20 20-40 40-60 60-80 80-100 Tota