exam
Maths Puzzle
Numerical Ability
the sum of two numbers is 28,and there product is 7.find the sum of the reciprocals of the numbers.
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exam Other Question
in 1993, the life expectancy of males in a certain counrty was 71.3 years. In 1999, it was 73.7 years. Let E represent the life expectancy in years t and let t represent the number
y=x^2-x-2