# 3 Tricky Brain Teasers – Can You Solve?

Q1. Sameer purchased a mobile for \$600, sold it for \$800, bought it back again for \$900, and sold it again for \$1000. How much profit did he make?

Q2. If A x B = 2, C x D = 12, B x D = 3, and B x C = 4, what does A x B x C x D equal?

Q3. Two boys are writing an exam. They are identical. They have the same mother, father and birthday.

They were asked, “Are you twins?” they simply answer, “no, we are not”. How is this possible?

### 135 Responses to 3 Tricky Brain Teasers – Can You Solve?

1. Nnenna July 10, 2014 at 2:24 PM #

Sameer made no profit ! He was just exchanging his money!

2. Charles Okoro July 7, 2014 at 1:21 AM #

Q1. Answer is zero profit = \$0 profit

Q2. a+b+c+d = 14

Q3. This cannot be possible. They are twins. They must be lying.

3. IC. Okoro July 7, 2014 at 1:17 AM #

Q3. They are lying. They must be twins

4. adegoke wahab March 14, 2014 at 1:01 AM #

1. \$200
2. 24
3. They may be product of more than two multiple or born at different years of same day and month.

5. the smart 1 December 7, 2013 at 4:25 PM #

Q1. the answer is \$200 profit
Q2. 24
Q3. they where triplets

6. Bk November 24, 2013 at 4:38 PM #

Q1. \$100
Q2. 24
Q3. Could be triplets or born in same month & day but different year

7. Olaide October 4, 2013 at 1:19 PM #

Q1. He made a profit of 200 on the first transaction and 100 on the second transaction, all totalled 300.

Q2. A=2, B=1, C=4 and D=3.
2*1*4*3=24.

Q3. They are either brothers born same date but different year or they triplet, etc.

8. rashid September 23, 2013 at 11:41 PM #

400
24
They are lying

9. araz September 14, 2013 at 12:42 PM #

Q1, 300 \$
Q2, A=2, B=1, C=4, D=3.
Q3 either bornbsame day of different years or they are triplets or more.

10. ode September 2, 2013 at 1:42 PM #

Q1. \$800-\$600 = \$200
\$800 – \$900 = -\$100
\$1000-\$900 = \$100
Balance = \$200
Q2. A= 2
B=1
C=4
D=3
2*1*4*3=24
Q3. They are probably triplets or siblings of same parents born on same day, same month but different years.

11. ode September 2, 2013 at 1:32 PM #

1. \$200
2. 10
3. Probably triplets or siblings born on same day, same month but different years.

12. Khawaja Nizamuddin September 1, 2013 at 6:54 PM #

1) \$200
2) 24
3) They are either triplets or twins born on dame date but different year

13. Raisur August 29, 2013 at 12:53 PM #

1. 300 \$
2. 24
3. they may be two of triplets.

14. sajjad August 25, 2013 at 5:00 PM #

Ans. 1. \$400
Ans. 2. 24
Ans. 3. Possibility is 33% boy or girl

15. M_Adnan August 25, 2013 at 2:47 PM #

q1. \$ 200.00
As one lost \$100.00 in re-buying the item in 900.00 (instead of \$ 800.00 on which it was sold)

q2. no idea yet, honestly didn’t give much time to riddle, tell later may be.

q3. Triplet i believe.

if 2 brothers in different years..Riddle said that the DOB are same. same means same year as well.

16. Rana August 25, 2013 at 1:25 PM #

1. 300 dollars
2. 24
3. they are three, two bros one sis

17. Zahid August 25, 2013 at 10:58 AM #

200 USD Profit.
24.
They may triplet OR younger /older.

18. Ali August 25, 2013 at 3:36 AM #

1- 100\$ profit
2- A=2, B=1, C=4, D=3 – 24 total
3- they may b triplets n(ot sure)

19. sharif123 August 24, 2013 at 11:01 PM #

• Ali - Admin August 26, 2013 at 3:27 PM #

Nothing much, though the visitors are a bit low. God-willing it will increase very soon.
And thanks for showing concern 🙂

20. Ahammed Kabeer August 24, 2013 at 12:55 PM #

1. 300 \$
2. A=+-2, B= +-1, C=+-4, D= +-3, AxBxCxD = 24
3. They may me triplets and they cannot called as twins

21. SHAHID B. VICHHI January 28, 2013 at 10:49 AM #

Q1: 300\$
Q2: 24
Q3: There should be possible that ,”They could be brother of another 3,4..”

22. khouane January 16, 2013 at 8:01 PM #

1.zero
2.A2?B1?C4?D3 A*B*C*D=24
3.not the same years they are brothers

23. n.elayyan December 8, 2012 at 2:15 AM #

1- he is a fool because he won 100 instead of 200 before.
2- AxBxCxD=24
3- because they are brothers not twins.

24. Umair Babar December 7, 2012 at 11:24 PM #

They may have been Triplets but the question is where is the third one ? Why isn’t he in the same class doing the same test ? So another Answer can be they Lied because they thought teacher would take it as cheating if they gave same answer Hehe..

25. Khurram December 5, 2012 at 12:26 PM #

1. 300USD
2. 24
3. Triplets

26. AH.13 December 2, 2012 at 4:59 PM #

1-300\$
2-24
3- triplets

good amin

• Ali - Admin December 4, 2012 at 6:21 PM #

All right answers …hope you haven’t copied 🙂

27. Sabrina December 1, 2012 at 11:22 PM #

Q1-200\$

Q2- a-2. B-1. C-4. D-3

Q3- there is a merror ?

• Ali - Admin December 4, 2012 at 6:21 PM #

28. anwar December 1, 2012 at 1:54 PM #

q1=\$100
Q2= 24
same date diff year, they are not twins

29. Manal November 28, 2012 at 2:09 PM #

Q1 300
Q2 24
Q3 they were lying

• Ali - Admin November 28, 2012 at 2:14 PM #

They were truthful…not lying..any other guess?

30. Amin Ali November 28, 2012 at 1:55 AM #

1. \$300
2. 24
3. because they are 2 brothers of a (3,4,5,6,7,8,…)-plet

• Ali - Admin November 28, 2012 at 2:17 PM #

31. Shihab November 27, 2012 at 11:36 PM #

1 ) Profit \$300
2) A=2, B=1, C=4,D=3
3) Same day but different year or month

• Ali - Admin November 28, 2012 at 2:18 PM #

But why are they similar?

• Majid September 3, 2013 at 1:08 PM #

Me and my elder brother are alike but eight years difference in age. Surely not same birthday but that can also happen. only 5 days difference could do that

32. sharif123 November 27, 2012 at 11:29 PM #

If you take maths test like this, you may loose some readers.

• Ali - Admin November 28, 2012 at 2:14 PM #

hahahaha

33. Sonah November 27, 2012 at 6:37 PM #

Twins do not take birth at the same time, so I understand, but one after the other,within a reasonable interval of time. If there is any limit to that interval, in that case, the averment can be understood.

• Ali - Admin November 28, 2012 at 2:19 PM #

Now that’s a philosophical answer 🙂

34. Sonah November 27, 2012 at 6:17 PM #

• Ali - Admin November 28, 2012 at 2:21 PM #

correct.

35. Sonah November 27, 2012 at 6:09 PM #

Q1.Break even.

• Ali - Admin November 28, 2012 at 2:21 PM #

Wrong. Try again.

36. samiullah November 27, 2012 at 11:25 AM #

only 200 \$ profit

600 Bought sold it 800, 200 Profit
Bought Back 900 sold it back 1000, this transaction is same he put 100 from his own pocket and got it back as he sold it back for 1000 USD

37. Alan November 27, 2012 at 6:56 AM #

Q1: \$0 profit
Q2: A=2, B=1, C=4, D=3.
Q3= they born in the same date in different year!

• Ali - Admin November 28, 2012 at 7:11 PM #

They were triplets!
And hardluck for the first question as well. Try again.

38. Bahafsine November 27, 2012 at 4:46 AM #

Q2)A=2,B=1,C=4,D=3
Q1)0(No profit,no loss)
Q3) Have same birthday,born at different year

• Ali - Admin November 28, 2012 at 7:12 PM #

They were triplets 🙂

39. madooo12 November 27, 2012 at 3:53 AM #

made \$300 (\$400-\$100) BTW who would buy a used phone for \$1000

we multiply eq. 1 & 2, we get 24

they aren’t born in the same year but on the same day and month in two different years (like me and my younger brother, both born 15/4 but I was in 1995, he was in 2008)

40. Mubarek.alamin November 27, 2012 at 3:40 AM #

ø He earned:-(600+800)-(900+1000)
-1(600+800) – 900+1000
-600+800 = -900+1000
200+100
\$300.00.
ø A*B*C*D=24 \ if A=2, B=1, C=4, D=3
ø The twins aren’t so much of A total twin in a skin colors.
I guess!

41. Nasser Zeidan November 26, 2012 at 11:50 PM #

1-profit is 200 + 100 =300\$
2- A=2 B=1 C=4 D=3
3- twin not twins

42. oleanderq8 November 26, 2012 at 11:33 PM #

1) he make 200

2) a=2 b=1 c=4 d=3

3) may be they are brothers only born inthe same day with one year or more differnce in the age.

43. Ahmed November 26, 2012 at 10:56 PM #

1-0
2-A=2 B=1 C=4 D =3
3- not sae year

44. Mohammed Nurudeen November 26, 2012 at 10:30 PM #

1.He Mäde 300 Dollars
2.AxBxCxD equal 36
3 they were born On d same Date of d month but different year

45. Mohd November 26, 2012 at 9:19 PM #

1. 300.
2. 24
3. May they are not on the same year but the same day of the month

46. Nisar Ahmad November 26, 2012 at 9:04 PM #

1. \$200 is the total profit
2. A = 2, B = 1, C = 4, and D = 3
3. Not the same year

47. M shayeb November 26, 2012 at 8:47 PM #

the profit will be 400 regarding his first capital which is 600 as simple as that 🙂

24

I think they were lying to the one who ask them 🙂

48. Abdul Waheed November 26, 2012 at 8:32 PM #

1. US\$300
2. 10.5
3. They were born on the same date but in different years

49. saleh November 26, 2012 at 8:08 PM #

1. 0
2. 24
3. not same year

50. saleh November 26, 2012 at 8:07 PM #

1.zero
2.24
3. not same year