Nitin was counting down from 32. Sumit was counting upwards the numbers starting from 1 and he was calling out only the odd numbers. What common number will they call out at the same time if they were calling out at the same speed ?  

Answer: D. They will not call out the same number

Nitin : 32  31  30  29  28  27  26  25  24  23  22  21  20.
Sumit :  1  3  5  7  9  11  13  15  17  19  21  23  25....
Clearly, both will never call out the same number.