Question

A hall is paved with 1 square metre tiles . If the length and breath of the hall are 15 m and 10 m , how many tiles are needed? If each tile costs Rupees 15.50 find the cost of tiling ??

it's Isha​

Answer 1

Answer:

You can go through this attachment

Step-by-step explanation:

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Answer 2

Answer:

Therefore, number of positive integral solutions of equation x1+x2+⋯+xr=n

= Number of ways in which n identical balls can be distributed into r distinct boxes where each box must contain at least one ball

= (n-1)C(r-1)

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thanks a lot for bunch of thanks