Shown below is the growth of a sapling. If you observe carefully it is growing in an A.P.Its height in the third week was $7 \mathrm{cm}$ and in the $7\mathrm{th}$ week it was $19 \mathrm{cm}$.

Based on the above information, answer the question by choosing the correct option from the given four option:

What is the growth of the sapling per week?

Shown below is the growth of a sapling. If you observe carefully it is growing in an A.P.Its height in the third week was $7 \mathrm{cm}$ and in the $7\mathrm{th}$ week it was $19 \mathrm{cm}$.

Based on the above information, answer the question by choosing the correct option from the given four option:

In which week will the sapling grow up to a height of $31 \mathrm{cm}$?

Shown below is the growth of a sapling. If you observe carefully it is growing in an A.P.Its height in the third week was $7 \mathrm{cm}$ and in the $7\mathrm{th}$ week it was $19 \mathrm{cm}$.

Based on the above information, answer the question by choosing the correct option from the given four option:

What will the height(in cm) of the plant be in the $25\mathrm{th}$ week?

Based on the above information, answer the question by choosing the correct option from the given four option:

An auditorium has $20$ seats in the first row, $24$ seats in the second and $28$ seats in the third row and so on.

Based on the information above, answer the question given by choosing the correct option from the given four options.

How many seats are there in the $16\mathrm{th}$ row?

An auditorium has $20$ seats in the first row, $24$ seats in the second row and $28$ seats in the third row and so on. In the last row of the auditorium there are $116$ seats. How many rows are there in the auditorium?

An auditorium has $20$ seats in the first row, $24$ seats in the second row and $28$ seats in the third row and so on. In the last row of the auditorium there are $116$ seats. What is the total number of seats in the auditorium?

An auditorium has $20$ seats in the first row, $24$ seats in the second row and $28$ seats in the third row and so on. In the last row of the auditorium there are $116$ seats. The hall was full on the last Saturday for a show. The collections for the day, if a ticket was sold for $₹200$ was?