Question

Median of an ungrouped data 13,10,12,18,17,p is observed as 14. Find p by giving reasons

1. Wt is the midfmi term of the expansion (10/x+x/10)10

The plan for a new housing development call for the construction of a large number of residential homes. A marketing expert tells the owner that because of the poor location of development, 20 of the houses which are sold will be sold at a loss. A financial consultant asserts 10% of the houses will be sold at a loss. The building contractor states that only 5%of the houses will be sold at a loss. 

a. If the owner feels that the market consultant is 5 times as reliable as the building contractor and the financial consultant is 4 times as reliable as the building contractor, what prior probabilities should the owner assign to this Percentages?

b. If 8 houses are actually built and sold, and 2 of the houses are sold at a loss, what prosterior probabilities should the owner assign to the 3 Percentages?

Log 10+2 log 3 - log 3 - log 2

Log 2 rational or irrational? Justify your answer.

Class 12 mathematics part 2 lesson number 7

y is an interger and y>-2 list elements in set notation

Integrate sin^-1x/√1-x^2

Which of the following are A.P.s ? If they form an A.P

find the common difference d and write 3 more term

2,5÷2,3,7÷2 

Like - 

     1st term :-  5÷2-2

                         5-2×2÷2  👈

                     =  5-4÷2

                   =  1÷2 

My questions is why multiplied 2 there ??????