Guest

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

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

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year 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

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free