The sum of the first 70 positive even integers is 4,970. What is the sum of the first 70 odd integers?
Pick one:
A) 4500 B) 4600 C) 4300 D) 4900 E) 5000
Sum of first n even numbers = n(n+1) =4970   Sum of first n odd numbers = n^2 = 70*70= 
<gadget id="calculator">70*70</gadget>
<output>4_900</output>
4900 (here n=70)   Answer : 4900
<result>D</result>
The sum of the first 70 positive even integers is 4,970. What is the sum of the first 70 odd integers?