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Practisequestions
Factors & Multiples: Level 1 1. What is the remainder when 100 is divided by 9? 1 2 3 4 5 Check Solution (A): \(100 \div 9\). We know that \(9 \times 11 = 99\). \(100 – 99 = 1\). The remainder is 1. 2. What is the Least Common Multiple (LCM) of 4 and…
[latexpage] 1. What is the sum of the first 8 prime numbers? 77 81 85 99 101 Solution: The first 8 prime numbers are: 2, 3, 5, 7, 11, 13, 17, and 19. The sum of these prime numbers is: \[ 2 + 3 + 5 + 7 + 11 + 13 + 17 +…
[latexpage] 1. List \( L \) consists of 10 consecutive integers. If \( -3 \) is the least integer in list \( L \), what is the range of the positive integers in the list \( L \)? 4 6 8 10 7 Solution: The list \( L \) contains 10 consecutive integers starting from…
GRE Math: Logic & Integer Properties 1. If \(x\) and \(y\) are integers and \(3x + 4y\) is odd, which of the following must be true? x is odd y is odd x is even y is even x and y are both odd Check Solution (A): Since \(y\) is an integer, \(4y\) must be…
GRE Math: Units Digits & Remainders 1. What is the units digit of \(13^{33}\)? 1 3 7 9 0 Check Solution (B): The units digit of powers of 13 follows a 4-step cycle: \(13^1 \to 3\), \(13^2 \to 9\), \(13^3 \to 7\), \(13^4 \to 1\). Divide the exponent 33 by 4: \(33 \div 4 =…