How many 0s are there in a sequence : 101, 102, 103...200 ?
[Approach]
Consider a square ABCD of side 10 cm. An equilateral triangle BCE is made on side BC , such that E lies outside the square. Pt A and E are joined. AE intersects BC at X. Find the ratio of area of triangle XBE and XBA.
There are five fruits - Banana, Apple, Orange, Pear and Mango - which are to be served among six boys. If no fruit can be served to more than one boy, find the probability that all the five fruits were served to exactly three boys such that each of the three boys gets at least one fruit.
5/8
25/54
55/108
125/324
Rakesh has the habit of pouring his tea from the cup into the saucer and then drinking it. He likes both the cup and the saucer to be filled only to 90% capacity. He also does not drink tea below 15% mark in the saucer. If he has to pour the tea from the cup into the saucer 3 times before emptying the cup (each time drinking from the saucer till it reaches the minimum level), what is the ratio of the volumes of the cup and the saucer?
OA IS 8/3
Solution please
how to fit a cube in a cone which has the maximum volume??
will one of its its surface coincide with the base of the cone??
Please suggest some good links for DI.. Any thread going on for the same?
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in 12 hours, how many times a minute-hand and hour hand of a clock makes 90 between them? how to approach such questions , please help?
3- vinay and varsha run a race with their speeds in ratio of 5:3. they prefer to run on a circular track of circumference 1.5km. what is the distance covered by vinay when he passes the varsha for 7th time?
in a 1000m race, ravi gives vinod a start of 40 m and beats him by 19 seconds. if ravi gives a start of 30 seconds then vinod beats ravi by 40m. what is ratio of speeds of ravi and vinod?
If two natural numbers, each of which is a 2-digit, are chosen randomly, find the probability that these two numbers have the same unit digits.
All possible natural numbers are formed by using one or more out of 2, 3 and 7 as their prime factor(s). If none of the formed
numbers is divisible by the cube of any natural number greater than 1, what is the sum of all such numbers?
Product A is 25% cheaper than product B and 25% dearer than product C. Rahul bought one unit each of the three products and sold all of them. If the total amount realized by selling the three products was thrice the price of product B, what is the percentage gain made by him?
A train usually takes 4 hrs to run between stations A and B. One day, the train started from station A, but after 1 hr, its speed went down to half of its usual speed, due to a heavy rain. Having traveled 100 kms in the heavy rain, the driver of the train was not able to see the railway track properly, due to water logging, and thereupon, he further decided further reduce the speed by 50%. After that, the train reached station B in another 4 hrs. What was the time taken by the train to reach station B from station A on that day?
oa are
5
7
9
cbd
Sn is a sequence of even natural numbers, the first of which is M. The average of the first 5 terms of the sequence is A. When M is divided by 3, the remainder is 1. The average of the first 7 multiples of 3 in the sequence is
a) A + 10
b) M + 11
c) A + 20
d) A + 16
If x26x + [[x] x + 1] + 6 ≥ 0 , where [x] denotes the greatest integer less than or equal to x, which of the following is not a possible value of 'x'?
a) 3 + √2
b) 5 + √3
c) 2 √ 2
d) 7 √ 3
The number of ordered pairs (x,y) that satisfy the equation 4x - Ay = B for
0
a) 3
b) 2
c) 1
d) 5
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Two persons A and B are walking down an escalator in the direction of the motion of the escalator. The ratio of the speeds (in steps) of A and B is 2 : 1 respectively. A covers 60 steps to get out of the escalator and B takes 40 steps to do the same. Find the number of steps in the escalator when it is stationary?
a) 80
b) 90
c) 120
d) 150
short approach plzz
how many palindrome numbers are there between 5000 to 67000?
approach for such problems