CBSE Class 12 Relations and Functions — practice questions
35 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 Relations and Functions in the app →A fair coin is tossed twice. The probability of getting at least one head is:If $P(A) = 0.5, P(B) = 0.4, P(A \cap B) = 0.2$, then $P(A | B)$ is:Two events $A$ and $B$ are independent if:A binomial random variable $X$ has $n = 10$ trials and success probability $p = 0.3$. Its mean is:A card is drawn from a deck of 52. Given that the card is RED, what is the probability that it's a KING?If P(A) = 0.5, P(B) = 0.6, and P(A ∩ B) = 0.2, then P(A ∪ B) is:Two dice are rolled. The probability of getting AT LEAST ONE SIX is:Bayes' theorem is essentially used to:For a discrete random variable X with values 0, 1, 2 and probabilities 0.3, 0.5, 0.2 respectively, the mean E(In a binomial distribution B(n=10, p=0.5), the probability of EXACTLY 6 successes is:The 4 conditions required for a binomial distribution (Bernoulli trials) include all the following EXCEPT:For a binomial distribution B(n, p), the MEAN and VARIANCE are:The number of ways to choose 3 books out of 5 (order does NOT matter) is:A relation R in a set A is a subset of:A relation in which no element of A is related to any is the:A relation in which each element relates to every element is:The empty and the universal relations are together called:A relation holding (a, a) for every a in A is called:If (a, b) in R always gives (b, a) in R, the relation is:If (a, b) and (b, c) in R give (a, c) in R, it is:An equivalence relation is reflexive, symmetric and:Congruence of triangles is reflexive because a triangle is:Perpendicularity of lines is not reflexive because a line:A function sending distinct elements to distinct images is:Another name for a one-one function is:A function in which every element of Y has a preimage is:Another name for an onto function is:A function that is both one-one and onto is called:A function is invertible exactly when it is:For f(x) = 2x from N to N, the function is:For f(x) = 2x from R to R, the function is:Mapping students to roll numbers is one-one because:Applying f first and then g gives the composition written:If a function f is invertible, then f must be:Domain, co-domain and range were first introduced in: