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In how many ways can 18 identical balls be distributed in 3 groups such that each group have at least 1 ball?? 

Can't this be solved by the formula of positive integeral solution ????

How to star verbal preparation ?

Please answer this

If x+(1/4x)=5/2, then 64x³+(1/8x³)=?

i have completed my masters in biotechnology . am really confused regarding what to pursue next as in mba or phd 

and if you suggest mba then in which stream whixh has more job oppurtunity

How would I approach errors, ant& synonyms

How to improve the RC section?

How to solve inequalities

Respected sir,
I had bought the study room course. Till now I am very happy with the material.
However I am facing one problem which I would request you to look into.
I have solved just 150 out of 1700 RC questions. However from the past few days I am experiencing that a lot of passages and questions are being repeated.You can check my attempted material for reference to my claim. Please help me with this, as the repetition of questions is not desired always.( sometimes it is good, but not always).
Thanks and regards,
Vishal Didwania.

where are ibps po mains test?