exam Maths Puzzle Numerical Ability

1/R=1/R1+1/R2

Solve for R.

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exam Other Question

Two dice are loaded in such a way that an odd number is twice as likely as an even number. The dice are tossed and the random variable (X) is the number of dots shown on the upper Find all real and imaginary solutions to the equation.

b^4+13b^2+36=0