A) \[1,0,8,9\]
B) \[8,1,0,9\]
C) \[1,0,9,8\]
D) \[1,9,0,8\]
Correct Answer: A
Solution :
Consider \[P=1\]and \[S=9\]. Then \[\underset{\_\_\_\_\_\_\_\_\_\_\_}{\mathop{\underset{9\,\,R\,\,Q\,\,1}{\mathop{\underset{\_\_\_\_\_\_\_\_\_\_\_}{\mathop{\begin{align} & 1\,\,Q\,\,R\,\,9 \\ & \times \,\,9 \\ \end{align}}}\,}}\,}}\,\] \[Q=0\] (else there will be regrouping in the thousands place) and \[R=8\]. So, \[\underset{\_\_\_\_\_\_\_\_\_\_\_}{\mathop{\underset{9\,\,R\,\,Q\,\,1}{\mathop{\underset{\_\_\_\_\_\_\_\_\_\_\_}{\mathop{\begin{align} & 1\,\,Q\,\,R\,\,9 \\ & \times \,\,9 \\ \end{align}}}\,}}\,}}\,\] is correct.You need to login to perform this action.
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