Question

The cost of digging a well after every metre
ob digging, when it costs Piso for the first
metre and rises by F50 for each subsequent
metre.​

Answer 1

Answer:

dig the well properly and I wish that uh have a good journey

Step-by-step explanation:

hope it's helpful

Answer 2

Answer:-

$\small\sf{Cost\:of\:digging\:1m\:deep,a1=Rs.150}$

$\small\sf{Cost\:of\:digging\:2m\:deep,a2=Rs.(150+50)=Rs.200}$

$\small\sf{Cost\:of\:digging\:3m\:deep,a3=Rs.(200+50)=Rs.250}$

$\small\sf{Cost\:of\:digging\:4m\:deep,a4=Rs.(250+50)=Rs.300}$

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$\small\sf{a2-a1=200-150=50}$

$\small\sf{a3-a2=250-200=50}$

$\small\sf{a4-a3=300-250=50}$

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The difference between the successive terms are same.

Hence, it is an AP.