please solve the above question with explanation
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Hey bro!
According to the question the flowers are arranged in rows like a decreasing A.P.
Thus, the A.P. formed is -25, 23, 21,.....,3
Here, d(Common difference) = 23 - 25 = -2
So, 3 = 25 + (n-1)(-2) ..... where n is number of rows.
=> -22 = -2(n-1)
=> n - 1 = 11 => n = 12
Thus, there are 12 rows of flowers.
Sum of this A.P. = (n/2) [a+l] => 6×(25 + 3) = 168
Thus, there are 168 flowers in all.
Hope you got it!
Have a good day ahead bro!
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