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Find the indicated terms of the sequences whose nth terms are given by
an = – (n2 – 4); a4 and a11
Concept: undefined >> undefined
Find a8 and a15 whose nth term is an = `{{:(("n"^2 - 1)/("n" + 3)";", "n is even""," "n ∈ N"),(("n"^2)/(2"n" + 1)";", "n is odd""," "n ∈ N"):}`
Concept: undefined >> undefined
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If a1 = 1, a2 = 1 and an = 2an−1 + an−2, n ≥ 3, n ∈ N, then find the first six terms of the sequence
Concept: undefined >> undefined
Given F1 = 1, F2 = 3 and Fn = Fn–1 + Fn–2 then F5 is
Concept: undefined >> undefined
The next term of the sequence `3/16, 1/8, 1/12, 1/18, ...` is
Concept: undefined >> undefined
A and B are two events such that, P(A) = 0.42, P(B) = 0.48, and P(A ∩ B) = 0.16. Find P(not A)
Concept: undefined >> undefined
A and B are two events such that, P(A) = 0.42, P(B) = 0.48, and P(A ∩ B) = 0.16. Find P(not B)
Concept: undefined >> undefined
A and B are two events such that, P(A) = 0.42, P(B) = 0.48, and P(A ∩ B) = 0.16. Find P(A or B)
Concept: undefined >> undefined
Two dice are rolled once. Find the probability of getting an even number on the first die or a total of face sum 8.
Concept: undefined >> undefined
From a well-shuffled pack of 52 cards, a card is drawn at random. Find the probability of its being either a red king or a black queen
Concept: undefined >> undefined
A box contains cards numbered 3, 5, 7, 9, … 35, 37. A card is drawn at random from the box. Find the probability that the drawn card have either multiples of 7 or a prime number.
Concept: undefined >> undefined
In a town of 8000 people, 1300 are over 50 years and 3000 are females. It is known that 30% of the females are over 50 years. What is the probability that a chosen individual from the town is either a female or over 50 years?
Concept: undefined >> undefined
A coin is tossed thrice. Find the probability of getting exactly two heads or atleast one tail or two consecutive heads
Concept: undefined >> undefined
If A, B, C are any three events such that probability of B is twice as that of probability of A and probability of C is thrice as that of probability of A and if P(A ∩ B) = `1/6`, P(B ∩ C) = `1/4`, P(A ∩ C) = `1/8`, P(A ∪ B ∪ C) = `9/10` and P(A ∩ B ∩ C) = `1/15`, then find P(A), P(B) and P(C)
Concept: undefined >> undefined
In a class of 35, students are numbered from 1 to 35. The ratio of boys to girls is 4 : 3. The roll numbers of students begin with boys and end with girls. Find the probability that a student selected is either a boy with prime roll number or a girl with composite roll number or an even roll number.
Concept: undefined >> undefined
If two dice are rolled, then find the probability of getting the product of face value 6 or the difference of face values 5
Concept: undefined >> undefined
In a two children family, find the probability that there is at least one girl in a family
Concept: undefined >> undefined
The King, Queen and Jack of the suit spade are removed from a deck of 52 cards. One card is selected from the remaining cards. Find the probability of getting a diamond
Concept: undefined >> undefined
The King, Queen and Jack of the suit spade are removed from a deck of 52 cards. One card is selected from the remaining cards. Find the probability of getting a queen
Concept: undefined >> undefined
The King, Queen and Jack of the suit spade are removed from a deck of 52 cards. One card is selected from the remaining cards. Find the probability of getting a spade
Concept: undefined >> undefined
