1. Find the sum of first 1000 natural numbers.
2. Evaluate the following sums.
(i) 10 + 11 + 12 + ... +25
(ii) 50 +51 +52 + ... + 100.
Answers
Answered by
1
Answer:
Step-by-step explanation:
2
51 + 52 + 53 + ...........+ 100
= (1 + 2 + 3 + .... + 100) - (1 + 2 + 3 + ...... + 50)
= It is in the form of n(n+1)2 series summationn(n+1)2 series summation
= n1 = 100 , n2 = 50
=[100(100+1)2] − [50(50+1)2]100100+12 - 5050+12
= (5050 - 1275) = 3775
Answered by
3
Answer:
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