7 points in row. three person take seats at random . what is the propbability that the middle seat is always occupied and no two person are sitting on consecutive seats .....
a 7/70 b 14/35 c 8/70 d 4/35 .... answer is d ... i am gettin 8/35
Two
friends, Turbo and Black Shadow, simultaneously left two places A and B
respectively. Turbo left from A, for B, and Black Shadow left from B, for A.
However, every time that either of them arrives at his destination, he
immediately turns back to reach his starting point and then keeps on travelling
in that manner between A and B. If the distance between A and B is 7 km and the
speeds of Turbo and Black Shadow are 70 kmph and 20 kmph respectively, how many
times do they meet in the first seven hours after they start?
approach?
a sphere just fits into cylinder.What will be the ratio of rod which is as long as sphere and a rod which is as long as cylinder?
a) 1:√2 b)1:1. C) √2:1. d) 2:3
approach please??
A boat travels 240 kms. in a round trip in 5 hrs.the speed of the river is 2.5 km/hr.if the speed increased by 5 km/hr.then in how many hours will it make the trip?
Sry no options....approach please??
Can anyone please suggest me some online or offline resource that can help me with special equations? I want to learn how to deal with m + n - mn = 0, or 1/x + 1y = 1/xy. Basically I want to learn how to deal with the questions that ask me to find out number of solutions. As of now, I used hit and trial. This makes me bit uncertain about my answers. IS there any other method..anything that can help?
An amount of rps.2,50,000 was distributed between A and B. A invested his amount at s.i. for 2 years at 10%pa while B invested his amount at c.i. at 8%p.a. for 2 years.if A's amount is rps. 13390 more than B,find A's share?
a) 112360 b) 123720 c) 128890
d) 132580...approach please??
How many pairs of numbers exist such that their LCM is 1260 and their HCF is a prime number?
2 small squares are chosen at random from a chessboard. Find the probability that they are of the same color.
@Going_High @sagarcat with approach plzzz
if a square is selected at random from 8x8 chessboard what is the probability that t will be 1x1?
please explain the answer
Ten members of an adventure club - A, B, C, D, E, F, G, H, I and J - plan to go rock climbing this weekend.
It was decided two groups shall go to different places. Group Alpha and Group Beta are planned, each of which will have exactly 5 participants. A, C and I are doctors. A, B, E, H and J have prior rock climbing experience. It is decided that each group should have at least 1 doctor and 2 members with prior experience. Also B and G must be in different groups.
If Group Beta is going to a place that is risky for rock climbing and insists on taking only rock climbers with prior experience and two doctors then who amongst the following is definitely a part of Group Alpha?
1) G
2)B
3)H
4)A
I know G is the answer(obvious) but what about A??? Can A be part of group beta??
Pguys, I have always problem ith these type of questions need help.
A cistern has a leak which would empty it in 10 hours. A tap is turned on, which admits 4 liters a minute into the cistern, and it is now emptied in 12 hours. How many liters does the cistern hold?
- 13800
- 13400
- 14800
- 14400
0 voters
Wimbledon grand slam is a 128 player knock-out tournament.There are various rounds held and in each round each player competes with one another player.Winner advances to next round and loser is eliminated.
Question: Just before the start of 5th round, how many players are still in contention? (I am getting 8 . But the answer given is 32)
A goldsmith has a pan balance and a set of 6 weights. using these he claims that he can weigh any positive integral weight uptill 364 g. what must be the denominations of these weights ?
detailed explanation pls! 😞
A, B and C are vertices of a triangular sheet of paper. It is folded such that the vertex A superimposes on vertex B. Further, it is again folded such that vertex C superimposes on vertex B. If AB = 6 cm, BC = 8 cm and CA = 10 cm, what is the area of the figure that is formed after the two folds ???
Alok walks to a viewpoint and returns to the starting point by his car and thus takes
Can anyone provide detailed