exam Maths Puzzle Numerical Ability

H is between I and J. H is the midpoint of line IJ, and IJ = 9.4. Find IH.

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exam Other Question

A few years ago, Chicago institute a new area code of 971 so that more phone numbers could be assigned. How many seven digit phone numbers can be formed using this area code if the Please help me solve this problem
Subtract
y/y^2+19+90 - 9/y^2+17y+72