Exam Maths Puzzle Category

approximate value of 2.1 raised to the power of 9

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Exam Other Question

Richa, Shruti and Sayali went to a restaurant to celebrate the birthday of Shruti. After having the lunch and paying the bill, they were presented by a bowl of mints. Richa went on to grab first and took one-third of the total mints but on being taunted by Shruti, she returned four back. Then Shruti took one-fourth of the left mints and accidentally dropped three back. Sayali took half of the remaining mints but flipped two back into the bowl. Now the bowl was left with seventeen mints.

How many mints were present originally?
a) 41
b) 38
c) 31
d) None of the above 6 number are taken random an multiplied together.Then what is the probability that the product ends in a odd digit other than 5