Regroup through thousands write the missing numbers 9 tens 10 ones= hundreds

9 Tens =9 × 10=90

10 ones =10 ×1=10

So, 9 tens and 10 ones

=(9×10)(10×1)

=9010

In words =Nine thousand Ten

→There is another possibility also

9×10+10×1

=90+10

=100

In Words =Hundred

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560