A student appears for 4 papers- English,Maths,physics,chemistry..maximum marks for which are in the ratio 1:1:2:2.His marks are in the ratio 4:8:13:15.If he got 80% of the total maximum marks.In how many papers did he score more than 80%??
Answer with explanation please..
Easy one
In a box containing 15 apples, exactly 6 apples are rotten. Each day one apple is taken out from the box. What is the probability that after four days there are exactly 8 apples in the box that are not rotten?
Qno 8 explanation.
In how many ways is 2a+5b=120
where a and b are whole numbers?
After striking a floor a rubber ball rebound 7/8 th of the height from which it has fallen. Find the total distance that it travels before coming to rest, if it is gently dropped from a height of 420 meters.
0 voters
a jaguar spots a rabbit in a forest and decides to hunt it for prey. In the ensuing chase it is seen that the rabbit takes 4 paces for every 3 paces of the jaguar.But each pace of the jaguar is 1.5 m long where as each pace of the rabbit is 0.5 m long. In how many paces will the jaguar catch the rabbit, if it is 10 m behind the rabbit initially??
oa-12
proper solution anyone ??
x=3+3^(1/3)+3^(5/3)
Find value of x^3-9x^2 ?
Please state your approach to this question?
Ramya has three types of boxes viz. large, medium and small. She plays a game in which she placed 9 large boxes on the table. She puts 5 medium boxes each, in a few of the large boxes then she puts 5 small boxes each, in few of the medium boxes. If the number of boxes that have been left empty in the game is 41, then how many boxes were used in the game by Ramya?
Mr. X house has a staircase with 12 steps. He can go down the steps one at a time or two at a time. In how many different ways can Mr.X go down the 12 steps, taking 1 or 2 steps at a time?
28a + 31b + 30c = 365
if a,b,c are non - negative integers then find a+b+c ?
A shopkeeper normally makes a profit of 20%. In a certain transaction he weighed 900g instead of 1kg without his knowledge due to an error in the weighing scale.If he charges 20% less than what he normally charges.What is his actual profit or loss percentage??
with explanation please
Question 4 please. The answer is 6, right? Because the minimum value of the expression would be 6, and only 6 among the given options can divide it.
A and C can do a piece of work in 12 days. B and C together can do it in 15 days. If A is twice as good a workman as B, in how much time can C alone do the work?
Please give the explanation also...
11 full approach plz
In an examination with four True/False-type questions, a student gets 3 points for every correct answer and loses one point for every incorrect answer. What is the probability that the total score of the student is positive if it is known that he has attempted all the questions?
1)3/5
2)11/16
3)3/16
4)2/5
PS: I am looking for approach and not OA.
Three non-zero single digits are in A.P. The sum of all three-digit numbers formed by using these three digits only once is divisible by 27.
Approach plz
Answer the questions on the basis of the information given below.
Sonal and Deepali started swimming towards each other simultaneously from points A and B respectively situated at two ends of a 96 km long stretch of a river. Destinations of Deepali and Sonal were points A and B respectively. Both of them could swim at 12 kmph in still water. When they started, it was high tide and Sonal swam against the stream. As soon as they met, the tide changed to 'low tide' and then Deepali faced the resistance of the stream. Deepali and Sonal took 7 hr 12 min and 8 hr 48 min to reach their destinations respectively. [Speed of the stream during high and low tide need not necessarily be the same.]
Find the speed of the stream during low tide.
1) 1 kmph
2) 4 kmph
3) 2 kmph
4) Can not be determined.
Solution please. ty
Q 41
A pastry shop sells 4 kinds of pastries.How many distinct sets of 7 pastries can one buy?
QA-120 Approach guys.