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There are 49 vacant seats among 50 seats. If no two girls sit together then the total number of seats will be=49-12=37 Hence, the total way of seating 12 girls on 37 seats is =37P12 =37!/25!
Which cells give rise to various organs of the plant and keep the plant growing?
Which gland in the human body functions as both an endocrine and exocrine gland?
Which substance is secreted by the liver?
Which action taking place in the digestive system of humans is similar to the emulsifying action of soaps on dirt?
The later (second) formed primary xylem elements are called:
Which one of the following lymphoid organ is large at birth but reduces with age ?
Which type of muscular tissue is multinucleated?
The plant cell wall is primarily composed of what?
In which part of the nervous system are interneurons typically found?
What is the role of pneumatophores?
