Math, asked by Kunalrao67, 11 months ago

Find the sum of all integers of 3 digits which are divisible by 7

Answers

Answered by diveshsaini88
4

Answer:

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Answered by lalitdixit
0
  1. first no. 105
  2. last no. 994
  3. diference 7
  4. formula n(n+1)/2
  5. u should common 7 in all numbers
  6. then apply formula for (15 to 142)-(1to 14) series
  7. finally u will get ans 70336
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