Evaluate (51 + 52 + 53 + ... + 100)
Pick:
A) 3775	B) 3665	C) 3456	D) 3459	E) 3569
Sn = (1 + 2 + 3 + ... + 50 + 51 + 52 + ... + 100) - (1 + 2 + 3 + ... + 50)   = (50 x 101) - (25 x 51)   = (5050 - 1275)= 
<gadget id="calculator">(5050 - 1275)</gadget>
<output>3_775</output>
3775.   Option 3775
<result>A</result>
Evaluate (51 + 52 + 53 + ... + 100)