Math, asked by rishabhduttpandey200, 3 months ago

please answer these questions

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Answered by dannyrand15

0

Answer:

a)even

b) odd

18²=324 , cannot be expressed as sum of two consecutive terms

81=1+3+5+7+9+11+13+15+17

21²=441 , 441 can be expressed as sum of 220 and 221

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