Study the following pattern1
1 + 2 = (2 × 3)/ 2
1 + 2 + 3 = (3 × 4)/ 2
1 + 2 + 3 + 4 = (4 × 5)/ 2
By observing the above pattern, find
(i) 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10
(ii) 2 + 4 + 6 + 8 + 10 + …….. + 100
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Answer:first answer is 55
And second answer is 750
Step-by-step explanation:no need of applying that disgusting formulas .....It will take a long time .... Instead use ARITHMETIC PROGRESSION formula
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