Ques:- How many 13 digit numbers are possible by using the digits 1,2,3,4,5 which are divisible by 4 if repetition of digits is allowed?
Recent Answer : Added by Admin On 2022-09-29 15:07:51:
Therefore, the number of possible 13 digit numbers using 1, 2, 3, 4, 5 which are divisible by 4
= x 3 + x 2
= (3 + 2)
=
= 244140625 ways
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
Ques:- Tis known in refined company, that choosing K things out of N can be done in ways as many as choosing N minus K from N: I pick K, you the remaining. This simply states the binomial coefficient identity . Find though a cooler bijection, where you show a knack uncanny, of making your choices contain all K of mine.For pedantry let K be no more than half N.
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Ques:- What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?
Recent Answer : Added by Felipe On 2021-12-17 16:08:28:
Let the principal be P and rate of interest be R%.
Therefore Required ratio
=P×R×6/100/P×R×9/100
=6PR/9PR
=6/9
=2:3
Ques:- A,B and C needs 8, 12 and 16 days respectively to finish a task. How many days will it take if A works for 2 days then B works on it until 25% of the job is left for C to do, and C completes the work?
Recent Answer : Added by Deven Sharma On 2023-05-31 18:36:37:
To solve this problem, we can break it down into steps:
Step 1: Determine the individual rates of work for A, B, and C.
If A needs 8 days to finish the task, then their work rate is 1/8 of the task per day.
If B needs 12 days to finish the task, then their work rate is 1/12 of the task per day.
If C needs 16 days to finish the task, then their work rate is 1/16 of the task per day.
Step 2: Calculate the combined work rate of A and B.
If A works for 2 days, their contribution will be 2 * (1/8) = 1/4 of the task completed.
If B works until 25% of the job is left for C, then they will complete 75% of the task.
Step 3: Calculate the time it takes for B to complete 75% of the task.
Since B’s work rate is 1/12 of the task per day, it will take B (75%)/(1/12) = 9 days to complete 75% of the task.
Step 4: Calculate the remaining work for C.
If B completes 75% of the task, then the remaining work for C is 100% – 75% = 25% of the task.
Step 5: Calculate the time it takes for C to complete the remaining work.
Since C’s work rate is 1/16 of the task per day, it will take C (25%)/(1/16) = 4 days to complete the remaining 25% of the task.
Step 6: Calculate the total time required.
A worked for 2 days, B worked for 9 days, and C worked for 4 days, totaling 2 + 9 + 4 = 15 days.
Therefore, it will take a total of 15 days for A to work for 2 days, B to work until 25% of the job is left, and C to complete the remaining work.
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Ques:- There are two positive numbers in the ratio 5:8. If the larger number exceeds the smaller by 15, then find the smaller number?
Recent Answer : Added by Akshat Thakkar On 2021-08-18 16:20:57:
25
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Ques:- If every alternative letter starting from B of the English alphabet is written in small letter, rest all are written in capital letters, how the month “September” be written. (1) SeptEMbEr (2) SEpTeMBEr (3) SeptembeR (4) SepteMber (5) None of the above.
Ques:- How many numbers up to 100 are divisible by 7?
Recent Answer : Added by DK BOSS On 2021-07-30 16:27:11:
divide 100 by 7, and you get 14.28. (Obviously you aren’t talking about decimals here) and so 14 numbers can be divisible by 7 up to 100.
The answer is 14.
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Ques:- A cube of side 4cm is painted with colors red,blue,green in such a way that opposite sides are painted in the same colour . this cube is now cut into 64 cubes of equal size .then 1) how many have atleast two sides painted in different colours.2) how many cubes have only one side painted.3) how many cubes have no side painted4) how many have exactly one side not painted.
Ques:- A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is?
Recent Answer : Added by Atif On 2022-12-05 16:13:31:
3000(4x/100) + 5000(2x/100)=10
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Ques:- The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?
Recent Answer : Added by Vigneshkarthik On 2022-05-17 09:07:59:
40
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Ques:- What has surprised you about the interview process so far?
Recent Answer : Added by Abdul Rawoof A R On 2021-12-13 17:58:37:
Call from HR for interview in an unexpected time!
Ques:- The least number which when add 3 to it, completely divided 8, 12 and 18 is?
Recent Answer : Added by Admin On 2022-09-29 15:47:25:
The correct Answer is 69
Ques:- Corruption is the price we pay for democracy. Discuss
Recent Answer : Added by Richa Ashu On 2022-08-14 16:31:41:
128
Ques:- Number of zeros in the product of the first 100 numbers?
Recent Answer : Added by Admin On 2022-09-28 19:16:12:
1×2×…100=100!
Number of zeros in product of n numbers =[5n]+[52n]+[53n]+…
Number of zeros in product of 100 numbers =[5100]+[52100]+[53100]
where [.] is greatest integer function
=[20]+[4]+[0.8]=20+4=24
Therefore, the number of possible 13 digit numbers using 1, 2, 3, 4, 5 which are divisible by 4
= x 3 + x 2
= (3 + 2)
=
= 244140625 ways