14. Find the sum. a) 1+2+3+.........+30 b) 3+6+9+.........+90 c) 2+4+6+.........+60 d) 3+7+|1H .......+119
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Step-by-step explanation:
d133
wwr
23
245
2345
- 345
- 44566
- 239
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