How many common roots do x^3-7x^2+6x+1=0 and x^3-6x^2+x+7=0 have??
if an unbiased coin is flipped 5 times, the probability that the same face does not show up in any three consecutive flips is
A) 1/2 B) 5/8 C) 3/8 D) 7/8
OA : A)
any other approach except making cases? coz for 5 its relatively easy, but if we encounter more coins or less number of consecutive requirements, then it might be tougher. Please explain. thanx..
ABCD is a rectangle. X and Y are two points on the sides AB and BC respectively. If areas of 🔺DAX , 🔺YCD and 🔺XBY are 5,4,3 respectively. What is the area of rectangle ABCD?
SAMCAT vs SIMCAT Take home, in terms of quality of questions and analysis
- SIMCAT TAKE HOME
- SAMCAT
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NUMBERS
If x= 1/10+1/11+1/12 ........ 1/100. Then what can be said about x ?
a. 1/3 < x < 1/2
b. x>3/2
c. 1/2 < x < 1
d. CND
DO MENTION THE APPROACH TOO. THANKS.
The functions f(x) and g(x) are defined as: f(x) = f(x – 1) + x and g(x) = g(x – 1) + f(x), where x is an integer greater than or equal to 1. If f(0) = 0, then the value of k, for which g(k) – g(4) = g(10) – g(8) is ?
Equation 14x^2+px+1=0 has two roots,one root being 5/16 more than the other.if p>0,find p
In a test of 50 questions, for every correct answer one gets 1 mark and for every wrong answer one incurs a penalty of 1/n marks, where n is a positive integer. No marks are awarded for unattempted questions. If 336 distinct scores are possible in this test, then what is the value of n ?
A peerson goes to a casino to play a game of dice. If ghe gets an even number, he gets as many coins as the number he rolls. If he rolls a 1 or a 3 he has to pay 1 or 3 coins respectively. If he rolls a fiv, he gets a chance to roll the dice again. what is the expected value of his gain?
A) 1.60 B) 1.40 C) 2 D) NOTA
OA : A)
please explain approach on how to build cases (and/or series).
An integer is chosen at random from the numbers ranging from 1 to 50. What is the probability that integer chosen is a multiple of 2 or 3 or 10?
- 32/50
- 46/50
- 33/ 50
- 17/50
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plz tell me good books for DI having very tough question
plz tell me books name available in market and not coaching books
6 balls of different colours are to be distributed among 2 boys.What is the probability that each boy gets same number of balls ?
- 1/2
- 5/16
- 15/64
- 3/8
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How many real roots does the equation x^4+2x^3-10x^2-2x+1=0 have??
Country of Bulguna has currency named tritt. There are 3 denominations of 1 tritt, 2 tritt, 10 tritt. In how many ways can a sum of 89 be formed using these denominations?
1. 215 2. 220 3. 225 4. 230
koi reply bhi kar do ...........2nd baar post kar raha hun...........plz tell me good books for DI having very tough question
plz tell me books name available in market and not coaching books
A and B have less than 6 diamonds each. what is the probability that the sum of the diamonds they have is more than 3 but less than 7?
- 3/5
- 2/3
- 9/25
- 4/9
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A die is rolled three times. What is the probability that the number that turns up in the second roll is more than that which turns up in the first roll and the number that turns up in the third roll is more than that which turns up in the second roll?
A. 5/54 B. 7/54 C. 11/54 D. 13/54 I'm doing (6*5*4)/(6*6*6) Where am I going wrong ? Can someone please explain?
An anti aircraft gun can take a maximum of 4 shots at an enemy plane moving away from it. The probability of hitting the plane at the first, second ,third and fourth shots are 0.4, 0.3, 0.2 and 0.1 respectively.What is the probabilty that the gun hits the plane?
- 0.68
- 0.43
- NOA
- O.69
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