exam Maths Puzzle Numerical Ability

Find the half-life of a radioactive substance that is reduced by 30% in 20 hours

Read Solution (Total 0)

exam Other Question

Here is my problem: My ID number is quite remarkable. It's a 9 digit number with the digits 1-9 appearing only once. The entire 9 digit number is divisible by 9. If you remore t Subtract. (4+1/3) - (1+1/4) =