27
How many 7 digit numbers are there whose sums of digits is odd?
A and B play a dice game using two dice viz. 'X' and 'Y'. Die 'X' has 1, 2, 3, 4, 5 and 7 printed on its six faces whereas die 'Y' has 2, 3, 4, 5, 6 and 8 printed on its six faces.There is only one number printed on every face of the two dice. In turns each of A and B rolls both the dice simultaneously and records the product of the two numbers appearing on the top of the two dice, as their respective scores. If the sum of the scores of players A and B is an even number in a round then how many distinct scores A could have in that round?
A train traveled a certain distance at a uniform speed. Had the speed been 8 kmph more, the journey would have taken 3 hours less and had the speed been 10 kmph less, the journey would have taken 6 hours more. Find the distance traveled by the train.
Note: Kindly give the approach without using equations. Comment with explanation please!
An urn contains only red, blue and white balls. Prob of getting red ball in two random selection is 2/7. Prob of getting white ball in two random selection is 1/2. There are 6 blue balls.
How many red balls in the urn?
Please post the detailed solution too..
Approach please
Approach ?
Any explanation?
Geometry Qs - Doubt in OA (28)
Please solve the qs and comment the OA. I feel the OA is wrong. Do share your approach.
Approach
A REAL test contains 3 sections: QA, VA and DI. A student taking the test has to attempt at least one section. When the data of test takers was assimilated, it showed that 74% of students attempted QA, 91% attempted VA and 77% attempted DI section. What could be the minimum percentage of students who attempted all the three-sections?
There is a group of 11 people namely: A1, A2, A3, ..., A11. The number of balls with A1 through A11 in that order is in arithmetic progression. If the number of balls with A1, A3, A5, A7, A9 and A11 is equal to 72, what is the number of balls with A1, A6 and A11 put together?
which one is good----- e-Test series or SimCat plus ??? plz suggest ....(IMS)
Find radius?
-How many numbers smaller than 2*10^8 and are divisible by 3 can be written by means of the digits 0,1 and 2.(excluding single digit and double digit numbers?
A bouncing ball is traversing a semi-circular path of radius 0.7 m. After every bounce the ball traverses with constant speed. From the point at which the ball bounces for the first time, there are laser beams placed 1 m apart at a height of 0.5 m from the ground. There are 20 such laser beams. The ball passes above each laser beam, below each laser beam, or through each laser beam. (Assume that the path and speed of the ball does not change if it passes through a laser beam).
Find the number of times the ball passes above the laser beam.
How are CL mocks compared to SIMCAT's in terms of difficulty and quality of questions?
O is center
How many times 7,8,6 comes from 1 to 786 ?