exam Maths Puzzle Numerical Ability

P (t) = 1540/1+37.5e^-0.32t = represents the pop. of bacteria in a culture tube after t hours.

Find:
a. The initial number
b. The number after 4 hours
c. The carrying capacit

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exam Other Question

if the first ten alphabets (ie A B..) are reversed then find out the alphabet which is 9th to the left of 11th from the right hand using suitable formulas not by counting. 126 divided by 2 times y to the 3rd power
y=3