a sum of money placed at compound interest doubles itself in 3 years.in how many years will it amount to 8 times itself ???
a>6 years
b>7 years
c>8 years
d>9 years
An urn contains 5 white and 7 black balls. A second urn contains 7 white and 8 black balls. A ball is drawn from the first urn and put into the second urn without noting its colour. Now, if a ball is drawn from the second urn, the probability that it is white isa 49/96b 89/192c 77/192d 61/192
Two cars P and Q are moving at uniform speeds, 50 km/hr and 25 km/hr respectively, on two straight roads intersecting at right angle to each other. P passes the intersecting point of the roads when Q has still to travel 50 km to reach it. What is the shortest distance between the cars during the journey?
a 20√5 kmb 50 kmc 25 kmd 25√2 km
Can anyone help me understand how √3r is OA? Isn't the full diagonal taken as √3 n not just OA ?
How many numbers are there in between 1000 and 10,000 which when divided by 4, 5, 6 and 7 give remainder 1, 3, 3 and 5 respectively?
Q.33
'a' and 'b' are coprime such that a
Q.34
In Badlapur, it was found that 90% of the people drink coffee and 80% drink tea. Also, 70% of people drink whiskey and 60% drink vodka. No person drinks all four beverages, and they all drink exactly three of the four beverages. What percent of the people drink liquor? [Both Vodka and Whiskey are liquors.]a 70%b 80%c 90%d 100%
In how many ways can one select three digits out of (1,2,3,4,5,6,7,8,9) such that no two of them are consecutive?
Explain pls.
If the equations x2−Ax−B=1 and x2−Bx+A−2B=10 have a common integral root and the values of A and B are integers, then how many value can A-B take if A>B?
If the equation 2x^50+a49x^49+a48x^48+....a1x+a0=0 has all the roots which are consecutive numbers from 1 to 50, then find the value of a49.
What is the maximun possible area of a rectangle inside a semi-circle of radius 20cm ?
How many solutions of the following equation -
3a + 5b + 7c + 15d = 85
a,b,c,d have to be positive integers.
Please give the approach and explanation.
If x² + y² - 6x + 4y = 4, find the maximum value of 3x + 4y.
I might need a change in test center due to bad weather. Is it likely to happen now??..It has been raining very heavily and if this keeps up, I might not be able to travel. I am in Chennai and I have been allotted a center in Puducherry..
In shuffling a pack of cards three are accidentally dropped. The probability that the missing cards are of different suits is?
- 169/425
- 165/429
- 162/459
- None
0 voters
Probability that sum of the number appearing in 2 throws of a die ll add up to an odd composite no ??
The no. of solutions for the equation a^2+b^2 - 8c = 6, a,b,c are positive integers.
an AC manufacturer offers discount as per the following rule: For the Second service ina year, the customer can avail 10% discount, for the third and fourth servicing within a year, the customer can avail of 11% and 12% discounts respectively of the previous amount paid. Finally, if a customer gets more than 4 services within a year, he has to pay just 55% of the original servicing charges. If Rohan has availed 5 services from the same service centre in a given year, the total percentage discount availed by him is approximatley:
- 24.08
- 22.33
- 20.88
- 16.52
0 voters
Ratio of the areas of circles circumscribing and inscribing a regular hexagon ??