Question

n integers are selected at random and multiplied together.find the probability that last digit of the product be
a) 1,3,7 or 9
b) 2,4,9,6
c)5
D) 0

Answer 1

This is fun, any ideas?

Answer 2

ya its interesting

Answer 3

i know it is .bt what i dont know is to solve .:P

Answer 4

Me neither... I don't even know what the question is really asking..

Answer 5

start with pton of 2 integers ending in 13 7 9

Answer 6

prob of

Answer 7

how, can u show the working?

Answer 8

to get odd end u need odd multiples only

Answer 9

@conain007 how many possible choices are there for the last digit of a number?

Answer 10

dan u r on the right path.

Answer 11

and if u multiply by 5 its gonna give u 5 or 0 so exclude 5

Answer 12

that leaves us with 4 odd integers to chose from for each place

Answer 13

first it should be 1,3,7 or 9.