apply (men*days)/work after calamity half of the work done is destroyed which is 5/12 and now remaining work to be done=1-5/12=7/12 (200*10)/(5/6)=14...

yes sir o is the centre

Series can be written as (1-2/3) + (2/3-2/5) + (2/5-2/7) + (2/7-2/9) + (2/9-2/11) = 1-2/11 = 9/11 option (4)

Hi Nikita, PFA solution

U can also learn directly Radius of sphere inside tetrahedron= h/4 And radius of sphere circumscribing tetrahedron =3h/4

Sorry for the wrong solution here is the right one

in tetrahedron height h = (√6/3)a where a = length of an edge so, in this case, h=(√6/3)*12 which is (√6)*4 we know the height of tetrahedron is divid...

In miscellaneous type of series find nth term and than try to solve ..

Sir how is AO=30 and OB=20 and sinADB =1/sqrt5

open all the brackets with + sign and solve it will give you x<=36 open all the brackets with -ve sign and solve it will give you x>=(-64) total...

9 is answer?

after two years average will become 38 then the total age of all employees =38n 5 people of age 40 leave then total age=38n-40*5 =38n-200 after 3 mor...