exam
Maths Puzzle
Numerical Ability
1/2x=3 5/6
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exam Other Question
A number between 300 and 400. If it is divided by 2, the remainder is 1. If it is divided by 4,6, or 8, the remainder is 3. If it is devied by 10, the remainder is 5. If t divided by 3,5,7, or 9, the remainder is zero. What is the number?
Use the formula a(sub1) + a(sub1)r + a(sub1)r^2 + ... a(sub1)^n-1 =
a(sub1) 1-r^n/1-r for the nth partial sum of a geometric sequence to find the sum 1 + 2/3 + 4/9 + 8/27 + ... 64