M4maths Previous Puzzles

03 Sep 2009 break the code

If in a coded language
14/11/1990 = 7615
21/08/1982 = 6915
17/06/1943 = 8716
Then 26/10/1967 = ?

OPtion

1. 5915
2. 5417
3. 2317
4. 4714
5. 4616
6. 4218
7. 8816
8. 6715
9. 6319
10. 4015

Solution

14/11/1990 is one-four/ one-one/ one-nine-nine-zero
This word representation contains 7 / 6 / 15 letters hence code is 7615
Similarly for others.

Correct Option: 8 Best Solution (0)

02 Sep 2009 Maximum profit?

Rate list of some liquids purchased by Subham is
Item Rate per litre Amount required in litres
Milk 20/- 5
Oil 80/- 1
Cream 120/- 0.5
A shopkeeper offers a discount of 10%, 20% and 30% in the rate of following items. These discounts
are given according to the demand of customer. For getting maximum profit, Subham will
use 30% discount in ...... Item and he will pay ....... rupee to the shopkeeper.

OPtion

1) Cream, 196
2) Oil, 190
3) Mile, 178
4) Milk, 190
5) Milk, 188
6) Oil, 194
7) Milk, 180
8) Oil, 188
9) Cream, 178
10) Oil, 178

Solution

In the problem, Subham has to invest 100 rupee in 5 litre milk, 80 rupee in 1 litre oil and 60 rupee
in 0.5 litre cream, therefore for getting maximum profit he will use 30% discount in milk of maximum price then 20% in oil
and 10% in cream of minimum price.

Correct Option: 5 Best Solution (0)

01 Sep 2009 Decode Mohan

If
RADHA :- 17347
SAPNA :- 1815213
SUMAN :- 281213
Then MOHAN :- ?

OPtion

1. 142355
2. 2715423
3. 7824517
4. 24513
5. 13246
6. 27713
7. 234561
8. 245678
9. 2121435
10. 265430

Solution

Alphabets and their position used in the word RADHA are

R-18, A-1, D-4, H-8, A-1
Code is Formed as given Below
Difference Between consecutive alphabets position
18-1, 4-1, 8-4, 8-1 is 17,3,4,7

Correct Option: 6 Best Solution (0)

31 Aug 2009 Salary Calculate

A man earns Rs. 10000 per month. His salary increases by 1% in every month. What will be his salary
after 6 months. Give your solution in integers only.

OPtion

1. 10324
2. 10791
3. 10817
4. 10618
5. 10457
6. 10615
7. 10998
8. 10546
9. 10756
10. 10713

Solution

After 6 increments his salary is 10000*(1.01)^6 = 10615.202

Correct Option: 6 Best Solution (0)

28 Aug 2009 week day sequence.

Some sequences & their changed sequences are given below.
First
Sequence Changed sequence
JAN JAN
FEB MAR
MAR MAY
APR APR
MAY FEB
JUN JUN

Second
Sequence Changed sequence
JUL AUG
AUG DEC
SEP OCT
OCT SEP
NOV JUL
DEC NOV

Changed Sequence for

SUN, MON, TUE, WED, THU, FRI, SAT is

OPtion

1. SUN, MON, TUE, WED, THU, FIR, SAT
2. FRI, MON SAT, SUN, THU, TUE, WED
3. MON, FRI, WED, SAT, SUN, THU, TUE
4. SAT, WED, TUE, FRI, THU, MON, SUN
5. THU, FRI, MON, SUN, WED, SAT, TUE
6. TUE, THU, FRI, WED, SAT, SUN, MON
7. WED, SAT, TUE, FRI, MON, SUN, THU
8. SAT, WED, MON, SUN, TUE, THU, FRI
9. SUN, SAT, TUE, FRI, MON, WED, THU
10. THU, FRI, SAT, SUN, TUE, WED, MON

Solution

: First sequence is
JAN, FEB, MAR, APR, MAY JUN
On arranging these words in increasing alphabetic sequence, we get
AJN, BEF, AMR, APR, AMY, JNU
On arranging these words in dictionary order we get
AJN, AMR, AMY, APR, BEF, JNU
Taking the words in their original words we get
JAN, MAR, MAY APR, FEB, JUN as changed sequence
On taking similar steps for finding the solution we get
SUN, MON, TUE, WED, THU, FRI, SAT
NSU, MNO, ETU, DEW, HTU, FIR, AST (increasing alphabetic sequence)
AST, DEW, ETU, FIR, HTU, MNO, NSU (dictionary order)
SAT, WED, TUE, FRI, THU, MON, SUN (answer)

Correct Option: 4 Best Solution (0)

27 Aug 2009 code for gopal

Some names & their codes are
ARJUN = 630
RAM = 234
SHIV = 1672
Code for GOPAL is

OPtion

1. 1763
2. 1472
3. 1680
4. 1370
5. 2890
6. 364
7. 742
8. 968
9. 168
10. 298

Solution

Alphabetic position of letters of word
ARJUN are 1, 18, 10, 21, 14
LCM of numbers = 630 hence code is formed.
Take similar steps for other words.

Correct Option: 3 Best Solution (1)

26 Aug 2009 find the similar word

If AJT = BEX
WPO = VHX
Then CKR = ?

OPtion

1. SOB
2. ITK
3. CNF
4. BZT
5. ZCA
6. MGH
7. NIT
8. AYF
9. HLM
10. ISB

Solution

Sum of positions of A, J & T in alphabets = 1 + 10 + 20 = 31
Similarly for B, E, X = 2 + 5 + 24 = 31
Take similar steps

Correct Option: 8 Best Solution (4)

25 Aug 2009 Field Area

Area of a field is 99 square meter. Convert it into square inch?
Given that 1 inch = 2.54 centimeter.

OPtion

1) 6387084
2) 0.0639
3) 2514600
4) 153450.3
5) 99
6) 638.7
7) 251.46
8) 1519.16
9) 15191580.38
10) 3897.64

Solution

Area = 99 sq. m.
= 99*100*100 sq. cm.
= 990000/(2.54*2.54)

Correct Option: 4 Best Solution (0)

24 Aug 2009 how many hour in a year

If 1 YEAR = 3 MONTH = 5 DAY = x HOUR then x is equal to

OPtion

1. 8
2. 4
3. 5
4. 6
5. 7
6. 3
7. 9
8. 1
9. 2

Solution

1 year = 12 month = 365 day = 8760 hour
In coded language
1 year = (1 + 2) month = (3 + 6 + 5) day = (8 + 7 + 6 + 0) hour
Or 1 year = 3 month = 14 day = 21 hour
Or 1 year = 3 month = (1 + 4) day = (2 + 1) hour
Or 1 year = 3 month = 5 day = 3 hour

Correct Option: 6 Best Solution (1)

21 Aug 2009 Max possible terms in series

How many terms at most can be taken in sequence
1, 74, 894, 9688, 88997, 897999

OPtion

1. 10
2. 20
3. 8
4. 597
5. 1177
6. 25
7. 9
8. 10000000
9. 200000000
10. infinite

Solution

This sequence contains 1 digit extra in every next number.
1 | 74 | 894 | 9688 | 88997 | 897999
=> 1 | 7 + 4 |8 + 9 + 4| 9 + 6 + 8 + 8| 8 + 8 + 9 + 9 +7|8 + 9 + 7 + 9 + 9 + 9 |
=> 1| 11| 21 | 31 | 41 | 51| ….
In ninth term sum of all digit of the number will be 81.
After that it should be 91 in tenth term which is not possible because the greatest
number of ten digit is 9999999999, the sum of its all digits = 9 × 10 = 90

Correct Option: 7 Best Solution (1)