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The sum of four number in A.P is 50 ,and the greatest number four times the least.Find the number. |
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Answer» Other student tell me ans. of this que... Thanks bhavya.... What Se (to Arun ) Let the first no. be \'a\'Therefore the terms of the AP area , a+d ,a+2d ,a+3d.So,a+(a+d)+(a+2d)+(a+3d)=504a+6d=502a + 3d = 25.......inow we know that the 4th term is 4times the first term.Therefore, 4a = a+3d3a = 3d a = d......ii Substituting ii in i we get2a+3a=25 a = 5Thus the AP is5 , 10 , 15 , 20 .... Se |
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