6 positive numbers are taken at random and multiplied together.Probability of the product ending in odd number other than 5 .(Src:Arun Sharma ) . (Marg darshan bhi kr dena jisse answer pta ho) . TIA
The odds in favour of standing first of three students a,b and c are 1:2,2:5 and 1:7. Probability that either of them will stand first.(No tie possible)
X+y+z =5 and xy+yz+zx=3 ...what can be the maximum value of x
In an examination , there are 3 subjects A, B and C. A student has to pass in each subject. 20 % fail in A, 22 % fail in B and 16% fail in C. The total no of students passing the whole exam lies between
a) 42% to 84%
b) 42& to 71 %
c) 58 % to 71%
d) 58 % to 84 %
Please post the approach too. Do not have OA .
In a class there are 150 students. At least 38 % play hockey, at least 40 % play basketball and at least 32% play football. If x is the number of students playing all the three games then x lies between
a) 0 to 100
b) 9 to 100
c) 0 t0 145
d) 0 to 150
A speaks truth in 30% of the cases, B speaks truth in 40 % of the cases and C speaks the truth in 25% of the cases. All of them have been interrogated in a murder case. What is the probability that the inspector would catch the murderer , if he goes by the majority of answers given by A, B and C?
a) 0.24 b) 0.45 c) 0.285 d) none of these
Kieron, a hard working student, started studying at 10 am on a Sunday. He dozed off sometime between 3 pm and 4 pm and woke up between 4 pm and 5 pm the same afternoon. As soon as he woke up, Kieron checked his watch and noticed an interesting pattern. The position of the hour hand at the time he woke up was the same as the position of the minute hand at the time he fell asleep while the position of the minute hand at the time he woke up was the same as the position of the hour hand at the time he fell asleep (i.e. the hour hand and the minute hand had interchanged their positions). How long did Kieron sleep?
any specific formula??
- 55 5/13 minutes
- none of these
- 54 6/13 minutes
- 110 10/13 minutes
0 voters
Kieron, a hard working student, started studying at 10 am on a Sunday. He dozed off sometime between 3 pm and 4 pm and woke up between 4 pm and 5 pm the same afternoon. As soon as he woke up, Kieron checked his watch and noticed an interesting pattern. The position of the hour hand at the time he woke up was the same as the position of the minute hand at the time he fell asleep while the position of the minute hand at the time he woke up was the same as the position of the hour hand at the time he fell asleep (i.e. the hour hand and the minute hand had interchanged their positions). How long did Kieron sleep?
any specific formula??
- 55 5/13 minutes
- none of these
- 54 6/13 minutes
- 110 10/13 minutes
0 voters
Kieron, a hard working student, started studying at 10 am on a Sunday. He dozed off sometime between 3 pm and 4 pm and woke up between 4 pm and 5 pm the same afternoon. As soon as he woke up, Kieron checked his watch and noticed an interesting pattern. The position of the hour hand at the time he woke up was the same as the position of the minute hand at the time he fell asleep while the position of the minute hand at the time he woke up was the same as the position of the hour hand at the time he fell asleep (i.e. the hour hand and the minute hand had interchanged their positions). How long did Kieron sleep?
any specific formula??
options-
55 5/13 minutes
110 10/13 minutes
54 6/13 minutes
None of these
Let A = (n − 1) (n) (2n − 1) represent the (n − 1)th term of a series S1, while B represents the nth term of the same series and C = (B −A) represents the (n − 1)th term of another series S2. Find the sum of the first 10 terms of S2.
Set A contains all natural numbers from 1 to 30. B is a subset of A such that it contains exactly one pair of numbers the sum of which is 30. The number of elements in B cannot be more than
A shopkeeper marks up his goods by 28.56%. His spring balance shows 840 g for every 950 g. He sells goods to a customer at a discount of 5.26%. Find his approximate profit or loss percentage.
The cost of a Kookaburra ball and a white ball is equal. The shopkeeper increases the price of a kookaburra and a white ball by 10% and 8% respectively. How much more a customer has to pay now to purchase a ball of each variety?
If |x|^3 = x^2+ 2|x| + y + k = y^2 - 1 has a unique solution in x, then the sum of all the possible values of k is
a)0
b)1
c)-1
d)None of these
Function f(x) is a continuous function defined for all real values of x, such that f(x) = 0 only for two distinct real values of x. It is also known that f(6) + f(8) = 0, f(7).f(9) > 0, f(6).f(10) >0 and f(0)>0 and 0>f(1)
How many of the following statements must be true?
I. 0> f(1).f(2).f(3)
II. f(3).f(5).f(7).f(9) > 0
III. 0> f(7).f(8)
IV. f(0) + f(1) + f(9) + f(10) > 0
(a) 1 (b) 2 (c) 3 (d) 4
If the roots of the equation x^2 + 7x + 8 = 0 are in the ratio p : q (p > 0, q > 0), then the value of root(p/q) + root(q/p) is:
a) 7(root(2))/4
b) -7(root(2))/4
c) 7/4
d) cannot be determined
Explanation pls
Two Cyclists started to ride at 7am, one from A to B, the other from B to A. Each of them rode at a constant speed along the same road and when each arrived at the terminal point,immediately turned back. After they met for the 1st time , each of them turned exactly once before they met for the 2nd time at 6 pm ,same day. Find the time of their 1st meeting
a clock looses one percent time during the first week and then gains 2 percent in the next one week. if the clock is set at 12 noon on a sunday, what will be the time that the clock will show exactly 14 days from the time it was set right?
options
1:36:48
1:40:48
1:39:45
1:04:50
OA-B
A and B start running round a 10km long circular at the same time from the same starting position but in opposite directions. after they have for 2 hrs, they are 4km away from each other but have not completed one single round along the track. what cannot be there speeds?
options-
1.5km/hr , 1.5km/hr
1.6km/hr , 1.4 km/hr
4km/hr, 2km/hr
more than two options
OA- C
In a cricket match between India & Srilanka, Malinga, a srilankan pace bowler can bowl at most 4 overs out of 20 overs in the game. No bowler can bowl two consecutive overs. If it is known that 20th over was bowled by malinga, which was also his 4th over, then in how many ways could he have bowled the remaining overs?