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).
Ques:- if 30 men completes a job in 15 days working 9 hrs per day.. how much hours per day should 40 men work ??
Recent Answer : Added by Admin On 2020-05-17 12:04:31:
as i assume the time taken to complete the job is not to be
changed while increasing the employees as it does not
clearly states so……….
30 men wrk for 9 hrs
therefore for the work to be done if no of workers is
increases the no of hrs / day to work should decrease so
here s a inverse relation
solving further we get
30 = K /9 ==> K= 270
now
40 = 270/y ==> y= 6.75
therefore ans is d)none
Ques:- How do you define failure?
Ques:- Basic, Project during College and About past Experience and projects.
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Ques:- A train passes a station platform in 36 sec and a man standing on the platform in 20 sec. If the speed of the train is 54 km/hr. What is the length of the platform?
Recent Answer : Added by train On 2021-08-31 15:11:14:
240 m
Ques:- If ?CERTAIN? is coded as ?XVIGZRM?, then how can ?MUNDANE? be coded in that language ? (A) NFMWZMX (B) VMZWMFN (C) NFMWZMV (D) MFMXZMV (E) None of these
Recent Answer : Added by althaf On 2022-08-14 16:31:50:
c
Ques:- A,H,A,L,?,H,E
Recent Answer : Added by Admin On 2020-05-17 12:04:28:
the answer is E
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Ques:- A lends Rs. 2500 to B and a certain to C at the same time at 7% p.a. simple interest. If after 4 years, A altogether receives Rs. 1120 as interest from B and C, then the sum lent to C is?
Recent Answer : Added by Nilesh Godle On 2021-07-23 15:26:04:
1500
Ques:- Find the least number of five digits which is exactly divisible by 12, 15 and 18?
Ques:- A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A’s share is Rs. 855. How much is the total profit?
Recent Answer : Added by Md. Mirshah Uddin Tanvir On 2023-06-11 15:40:03:
Rs. 1500
Ques:- Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:20:
Answer: 50 kmph.
Explanation:
Let the distances between city A to B and B to C be 2x km and 3x km respectively.
Total time taken to cover from A to C
= (2x)/40 + (3x)/60 = (6x + 6x)/120 = 12x/120 = x/10 Average speed = (2x + 3x)/(x/10) = 50 kmph.
Ques:- The three boxes 1,2,3 has values resp. AB,BC,AC Get 2A(B+C) +AC-2C(A-B)in Box 1 using only addition in 3 steps.
Recent Answer : Added by Admin On 2020-05-17 12:02:03:
GIVEN: 2A(B+C)+AC-2C(A-B)
THEREFORE 2AB+2AC+AC-2AC+2BC
2AB+AC+2BC
2(AB+BC)+AC
LET b1=AB b2=BC b3=AC
STEP1: b1 = b1+b2
so b1 = AB+BC
THEREFORE
NOW: b1 = AB+BC b2 = BC b3 = AC
STEP 2: b3 = b1+b3
so b3 = AB+BC+AC
THEREFORE
NOW: b1 = AB+BC b2 = BC b3 = AB+BC+AC
STEP3:
NOW: b1 = b1+b3
so b1 = AB+BC+AB+BC+AC
=2(AB+BC)+ AC
AB BC AC
STEP1 AB+BC BC AC
STEP2 AC BC AB+BC+AC
STEP3 AB+BC+AB+BC+AC BC AB+BC+AC
i.e 2(AB+BC)+AC BC AB+BC+AC
Ques:- City A population is 68000, decreasing at a rate of 80 per year City B having population 42000 increasing at a rate of 120 per Year. In how many years both the cities will have same population
Recent Answer : Added by Admin On 2020-05-17 11:59:22:
130 years
Ques:- If x=y=2z and xyz=256 then what is the value of x?
Recent Answer : Added by padmavathy On 2022-08-14 16:42:03:
8
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Ques:- A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
Recent Answer : Added by Admin On 2022-09-29 16:10:32:
Given:
Speed of man downstream= 30/3=10km/h
Speed of man in upstream=18/3=6km/h
Speed of man in still water=1/2 (speed of upstream+ speed of down stream)
= 1/2 (10+6)
=1/2*16
=8km/h
Ques:- On a particular day A and B decide that they would either speak the truth or will lie. C asks A whether he is speaking truth or lying? He answers and B listens to what he said. C then asks B what A has said B says “A says that he is a liar” What is B speaking ?(a) Truth(b) Lie(c) Truth when A lies(d) Cannot be determined
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Ques:- 25 racehorses, no stopwatch. 5 tracks. Figure out the top three fastest horses in the fewest number of races?
Ques:- Give an example of when you have risen to a challenge set for you?
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Ques:- A is sister of B. C is brother of D. D is sister of A. Howis B related to D?
Recent Answer : Added by Admin On 2020-05-17 12:03:21:
b)Brother or Sister
Because Bis related to either Brother or Sister.
Ques:- Who became the ninth Indian to claim 150 or more wickets ?
Ques:- How do you feel about the working hours from 9 to 5?
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).