Q: What is the sum of 990 plus 880 plus 50 plus 90 plus 790 plus 690 plus 40?

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980

multiples of 10 will be divisible by 2 and 5 So Ap is 110,120,130....990 here 990 is the nth term ie an=990 a+(n-1)d=990 110+(n-1)10=990 (n-1)10=990-110 (n-1)=880/10 n-1=88 n=88+1 n=89

990

990

990

Related questions

The sum of the equation - 990 + 880 +90 +790 +690 + 20, is found as follows;990 + 880 +90 +790 +690 + 20= (990 + 880) + (90 +790) + (690 + 20)= ( 1870 ) + (880 ) + ( 710 )= 3460Answer = 3460

The sum of the equation - 990 + 880 +90 +790 +690 + 60, is found as follows;990 + 880 +90 +790 +690 + 60= (990 + 880) + (90 +790) + (690 + 60)= ( 1870 ) + (880 ) + ( 750 )= 3500Answer = 3500

The sum of the equation - 990 + 880 +90 +790 +690 + 50, is found as follows;990 + 880 +90 +790 +690 + 50= (990 + 880) + (90 +790) + (690 + 50)= ( 1870 ) + (880 ) + ( 740 )= 3490Answer = 3490

The sum of the equation - 990 + 880 +90 +790 +690 + 70, is found as follows;990 + 880 +90 +790 +690 + 70= (990 + 880) + (90 +790) + (690 + 70)= ( 1870 ) + (880 ) + ( 760 )= 3510Answer = 3510

The sum of the equation - 990 + 880+40 +90 +790 +690, is found as follows;990 + 880 +40 +90 +790 +690= (990 + 880) + (40 +90) + (790 + 690)= ( 1870 ) + ( 130 ) + ( 1480 )= 3480Answer = 3480

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The answer = 3460

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