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Ages of 20 Students Enrolled in a College Class The table above shows the distribution of ages of the 20 students enrolled in a college class. Which of the following gives the correct order of the mean, median, and mode of the ages?

Of the students in a college, it is known that 60% reside in hostel and 40% day scholars (not residing in hostel). Previous year results report that 30% of all students who reside in hostel attain ‘A’ grade and 20% of day cholars attain ‘A’ grade in their annual examination. At the end of the year, one student is chosen at random from the college and he has an ‘A’ grade, what is the probability that the student is a hosteler?

During a seven - day period, a company produced 49,812 items that it considered acceptable and 21,348 items that it considered unacceptable. If the company produced a total of 10,830 items on the first day and the percent of the items produced on the first day that the company considered acceptable was the same percent of items that the company considered acceptable for the entire seven - day period, how many items produced by the company on the first day did the company consider acceptable ?

the graph above represents the reaction rate,r, at which an unfinished iron nail rists in water during the first 10 days of an experiment, where d gives time measured in days. What was the total amount of rust produced from d=2 to d=6?

Give the biological terms for each of the following: Introduction of weakened germs into the body to develop resistance against a disease.

(i) What is gene therapy? Name the first clinical case where it was used. (ii) Why is the introduction of genetically engineered lymphocytes into ADA deficiency patient not a permanent cure? Suggest a possible permanent cure.

Main ore of lead is galena.This is mined and separated from other minerals by froth flotation.There are two methods of extracting the lead. (i)First method involves the roasting of ore followed by reduction with coke or CO. (ii)Second method involves the partial roasting of ore followed by self reduction. Partial roasting of galena gives :

A camp had sufficient food for 400 soldiers for 20 days. However, some soldiers left on the first day only and the the food lasted for 32 days. Find, how many soldiers had left ?

Monochromatic light of wavelenghth 600 nm is used in a Young's double sllt experiment. One of the slits is covered by a transparent sheet of thickness 1.8xx10^-5 m made of a material of refractive index 1.6. How many fringe will shift due to the introduction of the sheet?

Monichromatic lightof wavelenght 600 nm is used ina Young's double slilt experient. One of the slits is covered by a transparent sheet of thicknes 1.8xx10^-5 m made of a material of refractive index 1.6. How many fringe will shift due to the introduction of the sheet?