Answer:
Probability of it being odd would be one half, and for less than four would be 2/10
Step-by-step explanation: Since it can only be odd the chance for it landing on odd is half.
then since it has to be lower than 4, and since there's only 1, and 3 that are odd and lower than four you would only have a 20 perecent chance of it landing on 1 or 3
Amar's age = a
sister is a - 5
add both = 39
a + (a - 5) = 39
2a - 5 = 39
2a = 44
a = 22 and sister is 17
4/11 because it is divisible by seven