Question

1. Samuel planted 23 rose plants in the first row
of a flower bed, 21 plants in the second, 19 in
the third and so on. If there were 5 rose plants
in the last row, find the number of rows in
the flower bed. What value is depicted from
this action​

Answer 1

Answer:10

Step-by-step explanation:

23,21,19,......,5 forms an AP b'coz d=(-2) is same in each case i.e., (21-23),(19-21)

An=5

a=23

d=(-2)

No. Of rows = n = ?

An=a+(n-1)d

5=23+(n-1)(-2)

5-23=(n-1)(-2)

-18/-2=n-1

9+1=n

10=n

Value of n is depicted from this action

Answer 2

Answer:

10

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