Number System Flashcards

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30 cards · Click to flip · Free study mode

All 30 flashcards for Number System

What is the greatest common divisor of 84 and 126?: 42
Which of the following numbers is divisible by 9?: 4725
How many positive factors does 72 have?: 12
What is the remainder when 157 is divided by 12?: 11
Which of the following numbers is a prime number?: 61
What is the least common multiple of 18 and 24?: 72
What is the units digit of 7^45?: 7
Which fraction has a terminating decimal expansion?: 16-May
Which of the following is an irrational number?: sqrt(2)
What is the smallest positive integer that is divisible by 4, 6, and 15?: 60
If a two-digit number has digits whose sum is 11 and the tens digit is 3 greater than the units digit, what is the number?: 74
What is the smallest number that must be added to 875 to make it divisible by 9?: 3
What is the prime factorization of 180?: 2² × 3² × 5
Which number is divisible by both 4 and 6?: 72
What is the greatest three-digit number divisible by 8?: 992
What is the smallest positive number that leaves a remainder of 2 when divided by 5 and a remainder of 3 when divided by 4?: 7
What is the sum of the first five positive odd integers?: 25
Which of the following is a perfect square?: 81
What is the units digit of 3^20?: 1
If 2^a × 2^3 = 2^9, what is the value of a?: 5
Which number is both a perfect square and a perfect cube?: 64
What is the remainder when 2^10 is divided by 7?: 2
How many integers are there from 25 through 40, inclusive?: 16
What is the value of 5^0 + 3^0?: 2
Which decimal is equivalent to 7/8?: 0.875
If the HCF of two numbers is 6 and their LCM is 180, and one number is 30, what is the other number?: 36
What is the smallest positive integer with exactly three positive factors?: 4
Which is the smallest positive integer divisible by every integer from 1 through 5?: 30
What is the smallest positive integer that is both divisible by 8 and a perfect square?: 16
If a number is divisible by 2 and 3, which of the following must also divide it?: 6