how to find probability of one or more events to happen from an incomplete data set
Bayes Theorem applies to conditional probabilities. 
$
     P(A|B) = \frac{P(A).P(B|A)}{P(B)} 
    $

The question you have posed is one of multiple events occurring together. If the events can be considered to be independent of each other, then,

P(A &amp; B &amp; C) = P(A).P(B).P(C)


In your question above, 

P(M &amp; A &amp; L) = P(M &amp; A).P(L) = P(M).P(A).P(L)


Based on the data provided by you, you should have these probabilities or can derive them by appropriate summations.

Let's say that .1 probability of males are between 1-10 years of age. Further, probability of males in location L is 0.2. So the probability of males in 1-10 years of age in Location L is 0.1 X 0.2 = 0.02 . This is assuming that all locations have the same probability distribution of age ranges.