Exam Maths Puzzle Numerical Ability Age Problem

6 number are taken random an multiplied together.Then what is the probability that the product ends in a odd digit other than 5

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Exam Other Question

approximate value of 2.1 raised to the power of 9 If out of a pond 60 fishes are taken out and tagged then left again in the pond and after some time 1000 fishes are taken out out of which 40 are already tagged find the total number of fishes in the pond?