M4maths Previous Puzzles

15 Apr 2011 Find the next number

3, 7/2, 13/3, 21/4, ..... Next number will be

OPtion

1) 31/5
2) 27/4
3) 29/4
4) 31/6
5) 29/5
6) 23/5
7) 37/5
8) 41/5
9) 22/3
10) none of these

Solution

31/5

Correct Option: 1 Best Solution (0)

14 Apr 2011 How many number are possible

How many numbers are possible between 1 to 1000 which are divisible by 4 and 6 but are not divisible by 12?

OPtion

1) 132
2) 259
3) 249
4) 198
5) 159
6) 158
7) 150
8) 198
9) 300
10) 478

Solution

there are printing mistake in question.
It would be
which are divisible by 4 OR 6 but are not divisible by 12?

Correct Option: 3 Best Solution (4)

13 Apr 2011 Find the value

6 / 5 * 9 – ( 7 + 5 ) * 4 / 3 + 6 is equal to

OPtion

1) 1.2
2) 2
3) 2.2
4) 0.8
5) 0.6
6) 1.8
7) 1.4
8) 6
9) 2.8
10) 4

Solution

By solve this we get ans is 0.8

Correct Option: 4 Best Solution (7)

12 Apr 2011 Find the water and milk ratio

A jar of 12 litre is half filled by water and half filled by milk. One third of the total content is removed from the jar and is filled by water. After that half of the liquid from the jar is removed and same amount of water is added in it. Final composition ratio of water and milk will be

OPtion

1) 2:3
2) 4:1
3) 1:5
4) 2:5
5) 3:1
6) 3:2
7) 1:6
8) 7:2
9) 5:1
10) 5:3

Solution

Initially
milk water
6 6
after 4 liter remove
4 4 + 4
after remove half liquid
2 4+ 6
so final composition is
2:10
1:5

Correct Option: 9 Best Solution (6)

11 Apr 2011 unit place?

The unit place digit in 17^789

OPtion

1) 1
2) 2
3) 3
4) 4
5) 5
6) 6
7) 7
8) 8
9) 9
10) 0

Solution

7

Correct Option: 7 Best Solution (7)

09 Apr 2011 (due to Tuesday missing puzzle) Find the minimum cost

According to a scheme a shopekeeper gives 50%, 40%, 30% in 3 purchasings. these purchasing cost 1500, 2700, 3500. minimum total bill would be?

OPtion

1) 3280
2) 3200
3) 3350
4) 4420
5) 4846
6) 4400
7) 2250
8) 2430
9) 5800
10) 4680

Solution

Max discount are
3500 50% = 1750
2700 40% = 1080
1500 30% = 450

So the total bill amount is = 7700 - 3280 = 4420

Correct Option: 4 Best Solution (2)

08 Apr 2011 How many number are possible?

How many numbers between 10000 and 80000 can be formed by using 0,4,5,8,9. without repetition

OPtion

1) 58
2) 56
3) 46
4) 47
5) 48
6) 59
7) 41
8) 102
9) 68
10) 23

Solution

2 way to chose the first number (4,5)
so the total number would be 2*4*3*2*1 = 48

Correct Option: 5 Best Solution (3)

07 Apr 2011 fine the diffrence

difference between sum of squares of 4,5,6 and their sum is?

OPtion

1) 57
2) 59
3) 60
4) 61
5) 62
6) 63
7) 64
8) 65
9) 66
10) 77

Solution

4^2+5^2+6^2 = 77

77 - (4+5+6) = 62

Correct Option: 5 Best Solution (8)

06 Apr 2011 Find the probability

In the year 2025, what will be the probability of the year to start from sunday. It is given that the year 2011 was started from saturday.

OPtion

1) 1/7
2) 2/7
3) 7/30
4) 1
5) 0
6) 1/3
7) 1/2
8) 4/6
9) 4/30
10) 2/7

Solution

If 2011 started with Saturday then 2025 will not start with Wednesday, So probability will be 0

Correct Option: 5 Best Solution (0)

04 Apr 2011 Fine the cost

If 5 kg apples, 6 kg oranges and 2 keg potato cost rupee 186 and 13 kg apples, 6 kg orange and 4 kg potato cost rupee 288. what would be the cost fo 1kg potato, 2kg orange and 3 kg apple

OPtion

1) 79
2) 59
3) 52
4) 67
5) 65
6) 77
7) 89
80 145
9) 82
10) 122

Solution

79

Correct Option: 1 Best Solution (5)