Basic doubt..please help me out....So i go to a Funfair in the city...The dealer tells me to bet 100 rs and tosses a coin.If it's heads then i win 100rs if it's tails, i lose my 100...So in this scenario..the expected value of the money i win is 1/2*100+1/2*(-100)=0 right?
Stations A and B are 1200 km apart. The ratio of the speeds of Harish and Sunil is 3 : 2. If Harish and Sunil start from stations A and B respectively and meet for the first time at a point C, then what is the distance between the point C and the station B?
Please explain the approach.
Answer is 480km
A man is known to speak the truth 3 out of 4 times. He throws a dice and reports that it is a six. Find the probability that it is actually a six?
a) 3/4
b) 1/6
c) 3/8
d) 5/12
pls share ur approach
A number N = (5^x)*x*y is the product of twenty consecutive three-digit numbers. If x and y are positive integers, what is the maximum possible value of x?
How many four-digit perfect squares 'abcd' are possible such that 'dcba' is also a four digit perfect square and is a factor of 'abcd'? (given a is not equal to d)
1)0
2) 1
3) 2
4) More than 2
A person possessed an amount of p. He borrowed x% of the amount that he already possessed from a friend. Then he returned y% of the amount that he now possessed to his friend. He again borrowed x% of the amount that he was left with from another friend and then returned y% of the amount that he now possessed to him. He repeated the same exercise with three more friends. If he ended up with 'p' in the end, which of the following is true?
x>y
y>x
x=y
Cannot be determined
The question given below is followed by two statements, A and B. Mark the answer using the following instructions:
Mark (a) if the question can be answered by using statement B alone, but not by using statement A alone.
Mark (b) if the question can be answered by using statement A alone, but not by using statement B alone.
Mark (c) if the question can be answered by using both the statements together, but cannot be answered by using either statement alone.
Mark (d) if the question cannot be answered even by using both the statements together.
Q. If 'n' is a natural number less than 10, is the number N = nnnn.….nnnn divisible by 11? A. N is of the form (6k + 5).
B. N consists of (2p – 6) digits, where p is a natural number greater than 3.
if 2000!=m*12^n.m is not divisible by 12 and m,n are integer.find 3rd last digit of m
- 1
- 3
- 5
- 0
0 voters
the medians of triangle meet at(3,5) and mid point of side is (4,6).The side opposite to(4,6)
- (1,3)
- (-1,-3)
- (3,1)
0 voters
how many positive integers of n there such that 3*n is 3 digit number and 4*n
is 4 digit number
- 88
- 85
- 86
- 84
0 voters
N is a 3 digit not divisible by 100.find d maximum possible ratio of n and sum of its digits.
- 91
- 81
- 90
- 100
0 voters
There are 4 offer letters and 4 envelopes labelled with the names of receipients. The number of ways in which all the offer letters can be put into the wrong envelopes is
- 8
- 9
- 16
- none of these
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In how many ways it is possible to choose a white square and a black square on chess board so that the squares donot lie in same row or column?
- 896
- 56
- 60
- 768
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A starts from home for his office. He travels downhill, then on flat ground and then uphill to reach his office. During this, the time taken to travel uphill and on flat ground is the same. It takes him 3 hrs to reach the office. On the way back home A takes 3 hrs 10 min to reach home along the same route. The speeds downhill is 60 km/hr, on flat ground is 48 km/hr and uphill is 40 km/hr.
What is the distance between home and office ?
A can do a piece of work in 10 days and B in 12 days. Find how much time they will take to complete the work if B leaves 2 days before the scheduled completion of the work.
Please answer with approach..........
how many non negative solutions for x+y+z=12 such that none of x,y,z exceeds 5??
Two men are walking towards each other alongside a railway track. A freight train overtakes one of them in 20 seconds and exactly 10 minutes later meets the other man coming from the opposite direction. The train passes this man is 18 seconds. Assume the velocities are constant throughout.
How long after the train has passed the second man will the two men meet?
- 89.7 minutes
- 90.3 minutes
- 90 minutes
- 92.7 minutes
0 voters
How many 3 digit no's have the property that their digits taken from left to right form either an AP or a GP.
Geomtry ques.
and why ABDE is not cyclic quad? 😞
Q- If the equation 12x + 17y = k has exactly five non-negative integral solutions and k is a three-digit positive integer, then the number of possible values of k is
1)78
2)90
3)96
4)98