Step-by-step explanation:
33,36,39,42,45,48
sum= n/2(2a1+(n-1)d)
sum= 6/2(66+(6-1)3)
sum= 3(66+15)
sum= 243
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Step-by-step explanation:
33,36,39,42,45,48
sum= n/2(2a1+(n-1)d)
sum= 6/2(66+(6-1)3)
sum= 3(66+15)
sum= 243