Question

1)How many two digit numbers are there if a number is selected from the set of two digit numbers, what is the probability for sum of the digits to be 10​

Answer 1

Answer:

P=1/10

Step-by-step explanation:

The two digit no with sum of the digits is 10​ are:

19,28,37,46,55,64,73,82,91

total no are =9

Total 2 digit no are 10to 99

=99-10+1=90

Thus probability  p=9/90=1/10