Exam
Maths Puzzle
Numerical Ability
sum of 8 consecutive odd number is 656 average of 4 consecutive even number is 87 what is the smallest odd number and second largest even number
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- let the odd numbers be 2x-1,2x+1,2x+3,2x+5,2x+7,2x+9,2x+11,2x+13.
addition performed on them gives 16x+48.
so 16x+48=656,
16x=656-48=608
x=38,
so smallest odd number is 2(38)-1=75,
let the even numbers be 2x-2,2x,2x+2,2x+4
average of them ((8x+4)/4)=87,
x=43,
so second largest is 2(43)+2=88. - 11 years agoHelpfull: Yes(1) No(0)
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