• # question_answer Direction: Find the number which will replace the '?' mark. A)  22                               B)  30                               C)  32                                D)  31

: Clearly, we have $\frac{5\times 6\times 4}{10}=12;\frac{6\times 7\times 5}{10}=21$ So, missing number$=\frac{4\times 8\times 10}{10}=32$