Without adding, find the sum.
(i) 1 + 3 + 5 + 7 + 9
(ii) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19
(iii) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 2
Answers
Answered by
1
Answer:
25
100
123
Step-by-step explanation:
Answered by
5
Answer:
The sum of first 5 odd numbers=5²=25
The sum of first 10 odd numbers=10²=100
The sum of first 12 odd numbers=12²=144
Step-by-step explanation:
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