What is the sum of the multiples of 4 between 53 and 145 inclusive?  Pick one:
A) 2000
B) 2200
C) 2300
D) 2450
E) 2500
the fastest way in an AP is to find the average and multiply with total integers..   between 53 and 145, the smallest multiple of 4 is 56 and largest =144..   average=(56+144)/2=100..   total numbers = (144-56)/4 + 1= 22+1=23..   sum=23*100= 
<gadget id="calculator">23*100</gadget>
<output>2_300</output>
2300   ans 2300
<result>C</result>
What is the sum of the multiples of 4 between 53 and 145 inclusive?