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200 logs of wood are stacked in the foll...

200 logs of wood are stacked in the following manner: 20 logs in the bottom row, 19 in the next row, 18 in the row next to it and so on. In how many rows 200 logs are placed and how many logs are there in the top row ?

Text Solution

Verified by Experts

The correct Answer is:
`t_(16) = 5`
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Knowledge Check

  • A meeting hall has 30 rows in all. There are 20 seats in the first row, 24 seats in the second row and 28 seats in the third row and so on. How many seats are there in the hall?

    A
    136
    B
    4640
    C
    2340
    D
    192

  • In how many ways can 8 students be arranged in a row?

    A
    8!
    B
    7!
    C
    8
    D
    7

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