Question

Let ASDFG equals the sum of the cubes of the first $20$ natural numbers and QWER equals the sum of the cubes of natural numbers between $10$ and $20$ then G-R equals

• A. $0$
• B. $5$
• C. $-5$
• D. $7$

Answer 1

Answer: (C)

$-5$

Let's look at the cubes from $0-20$:

$1,8,27,64,125,216,343,544,729,1000,1331,1728,2197,2774,3375,4096,4913,5832,6859,8000$

$ASDFG=44100$

$QWER=3025$

$G-R$ is the difference b/w the one's digits of ASDFG and QWER

$G-R=0-5=-5$