Math, asked by cl6arn01, 1 month ago

(ii) 7th triangular number​

Answers

Answered by santoshgupta9495
0

No odd perfect numbers are known; hence, all known perfect numbers are triangular. For example, the third triangular number is (3 × 2 =) 6, the seventh is (7 × 4 =) 28, the 31st is (31 × 16 =) 496, and the 127th is (127 × 64 =)

Answered by bs380440
0

Answer:

7 triangular no is 7 × 4= 28

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