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Find the sum of all three digit numbers which are multiple of 7. |
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Answer» 7 x 7 =4 9 × 3= 3 4 3  1 Secondary SchoolMath13 points Find the sum of all 3 digit number which are multiple of 7 Ask for detailsFollowReportbySuryakjr230220.01.2018 Answers  dhruvsh Smallest three digit number divisible by 7 = 105 and the largest = 994An = 994A = 105D = 7n= ?An = A + [ n - 1] Dthus994 = 105 + [ n - 1 ] 7thus by solving furthern = 128 now,Sn = n/2 [ A + An] Sn = 128/2 [ 105 + 994]thus,Sn = 70336.Thus the sum of all the three di git numbers divisible by 7 is 70336. 70336 is the correct answer of the given question sum of three digit numbers which are the multiples of 7 is 70336 |
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