Ques:- if a number is choosen between 100 and 999 includeing these numberrs what is the provbabilty that the number selected does not contain a 7 is
Recent Answer : Added by Admin On 2020-05-17 11:59:52:
p = prob(1st digit not 7)*prob(2nd digit not 7)*prob(3rd
digit not 7)
=(8/9)*(9/10)*(9/10)
=0.72
Sandhya had it right except that there are 900 numbers
between 100 and 999 inclusive (not 899).
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Ques:- 7^101+18^101 is a multiple of a.15 b.25 c.35 d.45
Recent Answer : Added by Khagesh On 2022-10-17 15:58:03:
25
Ques:- Nitin borrowed some money at the rate of 6% p.a. for the first three years, 9% p.a. for the next five years and 13% p.a. for the period beyond eight years. If the total interest paid by him at the end of eleven years is Rs. 8160, how much money did he borrow?
Recent Answer : Added by Dharmendra Kumar On 2021-12-09 18:39:47:
Ques:- A person is staying in the 25th floor of a 30 storied building. While going to the office, he uses the lift upto zeroth floor. But while returning back from office, the person is using the lift upto 18th floor and use the staircase to reach his home. Can you explain a probable reason?
Recent Answer : Added by SARAVANAN E On 2021-06-11 05:14:16:
Because he is very short for his height he can press upto 18th floor button only
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Ques:- In a grass field, If there are 40 cows, they could eat for 40 days. If there are 30 cows, they could eat for 60 days. Than if 20 cows, How much day they could eat?
A. 60
B. 80
C. 55
D. 50
Recent Answer : Added by Admin On 2020-05-17 12:05:48:
40
40
30
60
– 10 cows
+ 20 days
if 40 cows can eat for forty days
then 20 cows can eat for 80 days
Ques:- Peter invested an amount of Rs. 12,000 at the rate of 10% p.a simple interest and another amount at the rate of 20% p.a. simple interest. The total interest earned at the end of one year on the total amount invested became 14% p.a. Find the total amount invested?
Recent Answer : Added by Prakash Harigopal On 2022-05-17 09:08:33:
20000
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Ques:- Find (7x + 4y ) / (x-2y) if x/2y = 3/2 ?
A. 6
B. 8
C. 7
D. data insufficient
Recent Answer : Added by DK BOSS On 2021-07-15 08:19:28:
x/2y=3/2…
therefore
2x=6y
x=3y
therefor
=21y+4y/3y-2y
=25y/y
=25..
there answer=25
so for the above question, we don’t have an option…so answer
is Data Insufficient..
Ques:- There is a escalator and 2 persons move down it.A takes 50 steps and B takes 75 steps while the escalator is moving down. Given that the time taken by A to take 1 step is equal to time taken by B to take 3 steps. Find the no. of steps in the escalator while it is staionary.
Recent Answer : Added by reniy On 2022-10-11 16:07:04:
16
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Ques:- A person starts from his house and walks 2km straight and then takes a right turn and walks for 1km and again takes a right turn and walk for another 1km. now if he is in north – west direction from his house; find out the direction in which he has started from the house?
Recent Answer : Added by Biplab Nath On 2021-07-30 16:26:18:
West
Ques:- A, B and C enter into a partnership. They invest Rs.40,000, Rs.80,000 and Rs.1,20,000 respectively. At the end of the first year, B withdraws Rs.40,000, while at the end of the second year, C withdraws Rs.80,000. In what ratio will the profit be shared at the end of 3 years?
A. 1 : 2 : 3
B. 2 : 3 : 5
C. 3 : 4 : 7
D. 4 : 5 : 9
Recent Answer : Added by narendra On 2022-09-18 09:02:50:
C
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Ques:- A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?
Recent Answer : Added by Karthik Rajagopalan On 2022-08-14 16:28:59:
Recent Answer : Added by Harish On 2022-10-17 15:57:56:
1!=1
2!=2×1=2
3!=3x2x1=6
4!=4x3x2x1=24
5!=5x4x3x2x1=120
6!=6x5x4x3x2x1=720
The answer is 120.
Ques:- Four Members A,B,C,D are playing a game .A person losing a game should double the amount of others .B,C,D are losing in order after three games .The amount after 3 games are A&B having 40,D is having 16&C 80. Each questions carry one mark:
a) who started with small amount of money?
b) who started with greatest amount of money?
c) what amount did B have?
Recent Answer : Added by Admin On 2020-05-17 12:02:11:
status after 3 games
A-40
B-40
c-80
d-16
status after 2 games
A-20
B-20
C-40
D-96
status after 1 game
A-10
B-10
C-108
D-48
status after 0 games
A-5
B-93
C-54
D-24
so answers are
a)A
b)B
c)93
Ques:- Being a computer science student y do u prefer this domain.
p = prob(1st digit not 7)*prob(2nd digit not 7)*prob(3rd
digit not 7)
=(8/9)*(9/10)*(9/10)
=0.72
Sandhya had it right except that there are 900 numbers
between 100 and 999 inclusive (not 899).