| DIRECTION: In each as the following number series a wrong number is given. Find out that number. |
| \[\begin{matrix} 0 & 1 & 9 & 36 & 99 & 225 & 441 \\ \end{matrix}\] |
A) 9
B) 36
C) 99
D) 225
Correct Answer: C
Solution :
[c] The differences are \[1-\,0=1={{1}^{3}}\,\,;\,\,9-\,1=8\] \[={{2}^{3}}\,\,;\,\,36-\,9=27={{3}^{3}}\,\,;\,\,99-\,36=63\ne {{4}^{3}},\]\[but\,\,100-\,36=64={{4}^{3}}\,\,;\,\,225-100=125={{5}^{3}}\,\,;\] \[441-\,225=216={{6}^{3}}\]
You need to login to perform this action.
You will be redirected in
3 sec
