Question

Find the percentage of numbers from 1 to 80 that have either a 5 or a 6 as one of the digits?
(a) 45%
(b) 42.5 %
(C) 40%
(0) 35 %​

Answer 1

Answer:

(a) is write answer

=| (36/80)×(100)

=| (36/8)×10

=| (36/4)×5

=| 9×5

=| 45%

Answer 2

35%

Step-by-step explanation:

5,6,15,16,25,26,35,36,45,46,50,51,52,53,54,57,58,59,60,61,62,63,64,67,68,69,75,76

Here we will not consider 55,56,65&66 because in question they have asked 5 or 6 as one of the digits*

Total numbers= 28

therefore, 28/80*100 = 35%