11550.3 men can complete a piece of work in 6 days. Two days after they started the work, 3 more men joined them. How many days will they take to complete the remaining work?
2 days
3 days
4 days
5 days
Explanation:
3 man 1 day work = 1616
3 man 2 days work = 2626
Remaining work = (1 - 2626 ) = 2/3 parts.
6 man together perform the work in 1 day is = 1616 + 1616 = 2626 parts
2626 parts completed in 1 day
2323 parts will b completed in 2 days
11551.A single discount % equal to three successive discounts of 30%, 20% and 10%.
49.6%
50.4%
40%
60%
Explanation:
Let the initial price be 100.
30% discount on 100 is 30
(100 - 30) = 70
20% discount on the 70 is 14
(70 - 14) = 56
10%discount on the 56 is 5.6
So the answer is 30 + 14 + 5.6 = 49.6
11552.If "PROMPT" is coded as QSPLOS ,then "PLAYER" should be
QMBZFS
QMBZDW
QUREXM
QMBXDQ
Explanation:
1st 3 letters are denoted by its next alphabet and the next 3 letters are denoted by its previous alphabets.
11553.When an array of pointers is passed through a function, what actually is passed?
address of the starting element
last element
first element
number of elements
Explanation:
When any array is passed through a function,always the address of starting element is passed.
11554.If the operation,$^$ is defined by the equation $x ^ y$ = $2x + y$, what is the value of ain $2 ^ a$ = $a ^ 3$
-2
-1
0
1
Explanation:
$2^a$ = 2 × 2 + a - - - (i)
$a^3$ = 2 × a + 3 - - - (ii)
4 + a = 2a + 3
=> a = 1.
11555.In a certain school, 20% of the students are below 8 yrs of age. The number of students above 8 yrs of age is (2/3) of the number of students of 8 years age which is 96. What is the total number of students in the school?
300
500
200
600
Explanation:
Let total students be x.
=> 0.2x + 2323 × 96 + 96 = x
=> x = 200.
11556.If there are 5,000 voters out of which 20% are not eligible to vote and there are two candidates contesting. The winning candidate won by 15% of votes. What is the total number of votes he got ?
3500
2300
1500
3000
Explanation:
Number of voters eligible for voting = 5000 × 0.8 = 4000
Number of votes extra got by the winning candidate = 4000 × 0.15 = 600
Let the number of votes won by winning candidate = x.
=> x - (4000 - x) = 600
=> x = 2300
11557.Find the set of all points (x, y) such that the area of the triangle with vertices (0, 0), (6, 4) and (x, y) is 4?
(x, y) lies on the circle (y - 6)2 + (x - 4)2 = 16
(x, y) satisfies 6y - 4x = 8 or 6y - 4x = -8
(x, y) satisfies 6y - 4x = 4 or 6y - 4x = -4
(x, y) satisfies 6y - 4x = 8
Explanation:
Area of a triangle if one of the point is (0, 0) = 12|(x1y2-x2y1)|12|(x1y2-x2y1)|
=> 12|(6 × y - 4 × x)|12|(6 × y-4 × x)| = 4 = 4
=>6y - 4x = 8
11558.When not moving on the sidewalk, Maya can walk the length of the sidewalk in 7 minutes. If she stands on the sidewalk as it moves, she can travel the length in 4 minutes. If Maya walks on the sidewalk as it moves, how many minutes will it take her to travel the same distance? Assume she always walks at the same speed, and express your answer as a decimal to the nearest tenth.
3.6
2.5
3.8
2.8
Explanation:
Assume distance of sidewalk "x"
Speed 1 (moving on sidewalk)
Speed 2 (moving off sidewalk)
Since both the movements are in same direction, we can do speed 1 + speed 2
Speed 1 = x4x4
Speed 2 = x7x7
Speed 1 + speed 2 = 11x2811x28 = = 0.39286x
Now new time while moving on sidewalk = x0.39286xx0.39286x = 2.54544
Hence, the answer is 2.5
11559.The ages of Old and Young total 48. Old is twice as old as Young was when Old was half as old as Young will be when Young is three times as Old was when Old was three times as old as Young. How old is Old?
Old-42, Young-26
Old-38, Young-22
Old-30, Young-18
Old-28, Young-14
Explanation:
From the options itself,we can see that option c
old = 30
young = 18
30 + 18 = 48
By reducing this years only by one
Before 6years
old = 24 (half of young)
young = 12 (twice of old)
42743.If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6 .find the ratio of their 13th terms
129/231
1/2
23/15
None of the above
42744.If the letters of the word “rachit” are arranged in all possible ways and these words are written out as in a dictionary, what is the rank of the word “rachit”.
485
480
478
481
42745.Ravi’s salary was reduced by 25%.Percentage increase to be effected to bring the salary to the original level is
20%
25%
33 1/3%
30%
42746.A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job
48
34 2/7
44
45
42747.How long will a train 100m long travelling at 72kmph take to overtake another train 200m long travelling at 54kmph
