# 2 Tricky Riddles – Solve Them If You Are Smart ! #1
When Polly was seven years old she hammered a nail into the tree in her backyard to mark her height. 3 years later at age 10, Polly returned to see how much higher the nail was. If the tree grew by seven inches each year, how much higher would the nail be?

#2
It is known that only 2 % students solved this in one of the most
difficult exams the IAS (Indian Administrative Service) Exam
IF
5+3+2 = 151022
9+2+4 = 183652
8+6+3 = 482466
5+4+5 = 202541
THEN
7+2+5 = ?

### 21 Responses to 2 Tricky Riddles – Solve Them If You Are Smart !

1. KiranKumar B September 5, 2014 at 11:56 AM #

ans : 143547

• Sana - Editor FFJ September 13, 2014 at 10:42 AM #

2. hazem September 4, 2014 at 4:50 AM #

#1
at the same height, growing will be from top!
#2
143547
coz >
7+2+5=?
7*2=14
7*5=35
14+35=49
49- the middle# 2=47

• Sana - Editor FFJ September 13, 2014 at 10:43 AM #

3. hussein September 1, 2014 at 9:47 PM #

1- 21″
2- 143547

4. Mohd.Omar September 1, 2014 at 1:21 PM #

1. The nail will be in the same height as he nail it.
2. 143547

5. abdessalam September 1, 2014 at 4:51 AM #

1- The nail will at the same hight, the tree grow from the top.
2- 351047 >>7*2,7*5,7*(5+2)-2

6. shakil August 31, 2014 at 9:55 PM #

#1 if U happen to see the nail not absorbed by the growing wood 21″ more
#2 143547

I wonder why 2% of the students solved this…must b VERY young students.

• Sana - Editor FFJ September 13, 2014 at 10:45 AM #

The nail remains at same position as the trees grow on top 🙂

7. alinashwan August 31, 2014 at 4:51 PM #

21 in
7+2+5=143547

8. Masood Ghyasi August 31, 2014 at 2:30 PM #

1= 21 Inches higher from ground and age of Polly is not comparable

2= A + B + C = [AxB = X, A x C = Y, X +Y -B= ? ]
7 + 2 + 5 = [7×2 = 14, 7 x 5 = 35, 14+35-2=47]

This Formula work on all of the above … simple 🙂

With Regards,
Masood from Afghanistan

9. Perwaiz August 31, 2014 at 1:03 PM #

1. 21 inches
2. 143547 [7×2=14 7×5 =35 and (14+35-2= 47)]

• Mohan August 31, 2014 at 1:50 PM #

1)Nail will be in same place

2) 7+2+5

7*2= 14
7*5= 35
49-2 (middle number deducted)= 47

10. Bashar August 31, 2014 at 12:33 PM #

1. the nail grows up 21inches compared to Polly’s height 3 years ago,
2. 143547

11. sarwat ahmed August 31, 2014 at 12:28 PM #

2. 143547

• HSINI September 1, 2014 at 11:26 PM #

1- The nail will be at the same hihgt
2- IF
5+3+2 = 151022 5x(3+2)-3=22
9+2+4 = 183652 9x(2+4)-2=52
8+6+3 = 482466 8x(6+3)-6=66
5+4+5 = 202541 5x(4+5)-4=41
THEN
7+2+5 = 143545
7*12=14
7*5=35
7x(2+5)-2=45

12. Almoataz Billah August 31, 2014 at 12:12 PM #

143547

13. Ehtesham August 31, 2014 at 12:05 PM #

#1. 21 inches
#2. (7×2,7×5,(7×2+5)-2)=143547

14. Juned Ansari August 31, 2014 at 12:04 PM #

1. No correlation between height of Polly and Growth of tree. It is not necessary that Polly too grew by the same height as the tree.

2. 143547

15. Imran August 31, 2014 at 10:53 AM #

1. correction (21 inches – height gained by Polly in 3 years)

16. Imran August 31, 2014 at 10:50 AM #

1. 21 inches

2. 47 (7X2,7X5,(14+35-2))=47