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Did all the three classes together meet the school,s planning of planting 1000 plants? |
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Answer» AnswerIt can be observed that the number of TREES PLANTED by the students is in an AP.1,2,3,4,5………………..12First term, a=1Common difference, d=2−1=1Sn=2n[2a+(n−1)d]S12=212[2(1)+(12−1)(1)]=6(2+11)=6(13)=78Therefore, number of trees planted by 1 section of the classes =78Number of trees planted by 3 sections of the classes = 3×78=234Therefore, 234 trees will be planted by the students. |
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