CISF Constable Number System — practice questions
23 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CISF Constable 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 square of 349?What is the three-digit number which is 2 more than a perfect square and 2 less than a perfect cube?Which of the following numbers is NOT a perfect cube?What is the HCF of 16, 72 and 28?The HCF of 156, 312 and 195 is:If the number x3339 is divisible by 11, what is the digit x?The least common multiple (LCM) of 14, 42 and 77 is:If the number x4738 is divisible by 9, what is the value of x?Every composite number can be expressed as:The prime factorisation of 253 is:The HCF of 96 and 404 is 4. Their LCM is:The LCM of 6, 72 and 120 is:What is the HCF of 96 and 404?The smallest number that is exactly divisible by every number from 1 to 10 is:The product 2 x 3 x 7 x 11 x 23 equals:A number leaves remainder 3 when divided by 7 and remainder 3 when divided by 5. The smallest such number abovHow many prime factors, counted with repetition, does 21252 = 2^2 x 3 x 7 x 11 x 23 have?