Find the sum of all odd number upto 250.
Choose the correct option:  A) 15345  B) 15645  C) 15625  D) 15342  E) 15683
Explanation:   Number of odd numbers upto 250 = n/2 = 250/2= 
<gadget id="calculator">250/2</gadget>
<output>125</output>
125   Sum of first 125 odd numbers= (125)2   = 15625   Answer: Option 15625
<result>C</result>
Find the sum of all odd number upto 250.