The product of all the prime numbers less than 20 is closest to which of the following powers of 10? GMAT Explanation, Video Solution, and More Practice! The product of all the prime numbers less than 20 is closest to which of the following powers of 10? (A) 10^9 (B) 10^8 (C) 10^7 (D) 10^6 […]
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(0.99999999/1.0001) − (0.99999991)/1.0003 GMAT Explanation, Video Solution, and Additional Practice! (0.99999999/1.0001) − (0.99999991)/(1.0003) = (A) 10^(−8) (B) 3∗10^(−8) (C) 3∗10^(−4) (D) 2∗10^(−4) (E) 10^(−4) Give it a shot on your own and then you can reference the explanation and video solution. Good luck! This is a tough GMAT exponents puzzle from the GMAT Official Guide.
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Working simultaneously at their respective constant rates, Machines A and B produce 800 nails in x hours. Working alone at its constant rate, Machine A produces 800 nails in y hours. In terms of x and y, how many hours does it take Machine B, working alone at its constant rate, to produce 800 nails?
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A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are 12 participants, and each participant is to receive a different
M is the sum of the reciprocals of the consecutive integers from 201 to 300, inclusive. Which of the following is true? (A) 1/3 < M < 1/2 (B) 1/5 < M < 1/3 (C) 1/7 < M < 1/5 (D) 1/9 < M < 1/7 (E) 1/12 < M < 1/9 Correct Answer: A
