M4maths Previous Puzzles

28 May 2011 Missing question of 25th

If a question has been missed in 25th on May. Then the probability of using this question on Monday in the same month will be (consider that m4maths uses only 5 days of week)

OPtion

1) 1/2
2) 2/3
3) 3/4
4) 4/5
5) 5/6
6) 1/3
7) 1/4
8) 2/5
9) 3/8
10) None of these

Solution

Working days after 25th are 26th, 27th, 30th, 31st, so probability = 1/4

Correct Option: 7 Best Solution (0)

27 May 2011 average

What will be the average of all the dates upto the present day in this month.

OPtion

1) 12
2) 13.2
3) 13.8
4) 14
5) 14.7
6) 14.9
7) 15
8) 15.8
9) 16.1
10) None of these

Solution

Present date = 27
First date = 1
Average = (27+1)/2 = 14

Correct Option: 4 Best Solution (0)

26 May 2011 profit

(I) There is 19 % profit on an investment of one lakh fifteen thousand sixty nine rupee
(II) There is 18 % profit on an investment of one lakh eighteen thousand forty eight rupee only. Which one is greater out of these two profits.

OPtion

1) I
2) II
3) Both are equal
4) Insufficient Data
5) None of these

Solution

115069 * 0.19 = 21863.11
118048 * 0.18 = 21248.64

Correct Option: 1 Best Solution (0)

24 May 2011 Greatest

Which one of the following is greatest

OPtion

1) 3/13
2) 5/17
3) 7/19
4) 6/23
5) 1/9
6) 10/31
7) 12/41
8) 16/49
9) 11/40
10) 16/99

Solution

7/19 = 0.3684

Correct Option: 3 Best Solution (0)

23 May 2011 Sequence

The next number of the sequence 2, 6, 10, 30, 34, 102 ............. will be

OPtion

1) 56
2) 64
3) 78
4) 84
5) 92
6) 101
7) 106
8) 201
9) 256
10) None of these

Solution

2*3 = 6
6+4 = 10
10*3 = 30
30+4 = 34
34*3 = 102
102+4 = 106

Correct Option: 7 Best Solution (0)

20 May 2011 percent

16 % of 15 - 15 % of 14 is

OPtion

1) .2
2) .4
3) .6
4) .8
5) .1
6) .3
7) .5
8) .7
9) .9
10) None of these

Solution

16*15/100 - 15*14/100 = .3

Correct Option: 6 Best Solution (0)

19 May 2011 strength

The strength of Ram is twice that of Shyam, whereas the strength of Shyam is thrice that of Mohan. If Ram can do the complete work in 5 days, then total days required to do the complete work are

OPtion

1) 3
2) 5
3) 7
4) 9
5) 1
6) 2
7) 4
8) 6
9) 8
10) None of these

Solution

According to the given condition, let days required to do the complete work by Ram, Shyam and Mohan are respectively x, 2x and 6x.
Then work done in 1 day = (1/x)+(1/2x)+(1/6x) = (10/6x)
Total days required = 6x/10
on putting the value of x, we get total days = 6*5/10 = 3

Correct Option: 1 Best Solution (0)

18 May 2011 apple

The cost of 1 Kg apple and 9 dozen banana is 240 rupee whereas that of 36 dozen banana and 4 Kg apple is 990 rupee. Cost of 1 Kg apple is (in rupee)

OPtion

1) 40
2) 50
3) 60
4) 80
5) 100
6) 20
7) 30
8) Data are insufficient
9) No solution is possible
10) None of these

Solution

According to the given condition
x + 9 y = 240
4 x + 36 y = 990
It is not possible to find out any solution by solving these two equations

Correct Option: 9 Best Solution (1)

17 May 2011 Percentage

What will be the difference between 101 % of 99 and 99 % of 101

OPtion

1) 0
2) 1
3) 3.5
4) 6.25
5) 7
6) 8
7) 9.2
8) 10
9) 12
10) None of these

Solution

101 % of 99 = 99*101/100
99 % of 101 = 101*99/100

Correct Option: 1 Best Solution (6)

16 May 2011 what will be next

3, 14, 39, 84, ?

OPtion

1) 98
2) 125
3) 150
4) 155
5) 190
6) 175
7) 200
8) 110
9) 115
10) 92

Solution

1^3+1^2+1, 2^3+2^2+2, 3^3+3^2+3, 4^3+4^2+4, 5^3+5^2+5 = 155

Correct Option: 4 Best Solution (14)