CAT Number System — practice questions
15 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CAT Number System in the app →If $a + b = 7$ and $a - b = 3$, what is $a^2 - b^2$?Expand $(x + 5)^2$.If $a + b + c = 0$, what is the value of $a^3 + b^3 + c^3$?Factorise $a^3 - b^3$.If $x + \dfrac{1}{x} = 5$, find $x^3 + \dfrac{1}{x^3}$.If $a + b + c = 6$ and $a^2 + b^2 + c^2 = 14$, find $ab + bc + ca$.What is the prime factorisation of 360?For which value of n does $6^n$ end with the digit zero?How many divisors does the number $N = 2^3 \times 3^2 \times 5$ have?What is the HCF of 18 and 24?What is the LCM of 12 and 18?HCF of two positive integers a and b is 5. Their LCM is 200. If a = 25, what is b?Which of the following is a rational number?Which fraction has a TERMINATING decimal expansion?The product of a non-zero rational number and an irrational number is always: