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6. Find 4 numbers in A.P whose sum is 50 and greatest number is 4 times the smallestnumber

Answer»

a+(5-1)d=a5a+4d=5*a5a-a=4d4a=4da=dn/2[a+(5-1)d]=505/2(5a)=5025a=100a=4then a=d=4nbers are 4,8,12,16,20



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