If the mass of a proton is 2.34 * 10-14 grams, what is the mass of 1,000 protons?

A. 2.34 * 10-17

B. 2.34 * 10-13

C. 2.34 * 10-12

D. 2.34 * 10-11

9324:31 = Estimate the following quotient

Greg spins the spinner twice. find the probability that the spinner will land on 5 on the first spin and 2 on the second spin. Express your answer as a fraction in simplest form the circle has 4 pieces and the pieces are marked : 2,3,4,5

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A fraction with a zero in the numerator equals