27.there are 10 boxes a boy put three Marbles in the first box he goes on putting Marbles in all the boxes such that each box he puts 4 Marbles more than the previous box in all how many Marbles did you put in the 10 boxes ?
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Answered by
12
Answer:
210
Step-by-step explanation:
Let us assume that,
The given series is in AP.
Here, First term (Number of marbles in 1st box) = 3
d = 4.
n = 10(number of boxes)
We know that, S(n) = n/2[2a + (n-1)d].
Total number of marbles = 10/2 [ 2(3)+(10-1)4]
= 5[6+9(4)]
= 5(6+36)
= 5(42)
Total number of marbles = 210.
Answered by
5
Answer:
answer is:: 210
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