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8. The sum of all two digit odd numbers is (a) 2575 (b) 2475 (c) 2524 (d) 2425

Harshit Singh , 3 Years ago
Grade 12th pass
anser 1 Answers
Pawan Prajapati

Last Activity: 3 Years ago

Answer: b Explaination:Reason: All two digit odd numbers are 11,13,15,… 99, which are in A.P. Since there are 90 two digit numbers of which 45 numbers are odd and 45 numbers are even ∴ Sum = 452[11 + 99] = 452 × 110 = 45 × 55 = 2475

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