A) 331
B) 993
C) 678
D) 845
Correct Answer: A
Solution :
\[6\times 5=30,30\times 3+1=91,8\times 7=56,\] \[56\times 3+1=\] \[169,10\times 7=70,70\times 3+1=211\] Similarly \[11\times 10=110,110\times 3+1=331\]You need to login to perform this action.
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