solve this question mate plzzz
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Answer:
312
Step-by-step explanation:
no. of plants to be planted by class 1 is 4
i.e. 1(2)(2)=4
Similarly... no. of plants to be planted by
class 2 is 8
class 3 is 12 and so on.
Observing, we get an arithmetic progression: 4,8,12,16.....
S(n)=n/2 * (2a+(n-1)d)
=12/2 * (2(4) + (12-1)4)
Solving...
We get S(n)=312 which is the total number of plants to be planted.
Step by step explanation in Image :