Answer:
21
first we begin from 1 to 100 we find 11 numbers contain 1 then we count 1s from 10 to 19 we get 9 numbers but there is an exciption in number 11 as it cotains 2 1s so thenumber of 1s is 21
<span>When x is 4, </span>
<span>y = 11 (11 =/= 4) </span>
<span>When x is 2, </span>
<span>y = 5 (This is correct) </span>
<span>When x is 4, </span>
<span>y = 11 (11 =/= 3) </span>
<span>When x is 0, </span>
<span>y = -1 (-1 =/= -3)</span>
4 hours for short or 4.333 hours
No 8-12 is like 3:4 and 3-6 is like 1:2