book Maths Puzzle Numerical Ability

how do I solve 9[5+3(x+2)] ?

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book Other Question

Find the vale of x that makes the median the given number:

2,5,4,9,7,x median 6
The combined annual cost of the U.S. and Russian space program is approximately $71 billion. The U.S. program is $19 billion less than the Russian program. What is the apporximate