A) 40
B) 50
C) 55
D) 59
Correct Answer: B
Solution :
Ans. Let the I (lowest) number be x. Then, II number will be \[(x+9)\]. According to the question, \[{{(x+9)}^{2}}-{{x}^{2}}=981\] \[\{(x+9+x)\}\,\,\{(x+9)-x\}=981\] \[9\{2x+9\}=981\] \[18x=900\] \[x=50\]You need to login to perform this action.
You will be redirected in
3 sec