book Maths Puzzle Numerical Ability

The Eath weighs about 5.974E21 metric tons. The sun weighs approximatley 1.99E27 metric tons. The sun weighs ?? times as much as the earth. Enter your answer with at least four dig

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book Other Question

A garage discovered that 1/2 of their customers bought french cars, 1/3 german cars and 1/6 (20) american cars. how many customers did the garage have? use the variable expression 3x-1.
evaluate the expression when x=-3,-2,-1,0,1,2,and 3.