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 Page 1


 
   
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
 ANSWER KEYS (SET – C) 
 
 1. 4 2. 3 3. 2 4. 2 
 5 4 6. 4 7. 2 8. 2 
 9. 4 10. 3 11. 4 12. 3 
 13. ? 14. 4 15. 2 16. 3 
 17. 3 18. 2 19. 2 20. 1 
 21. ? 22. ? 23. 1 24. 2  
 25. 3 26. 3 27 2 28. 3  
 29. 1 30. 3 31. 2 32. 3 
 33. 2 34. 1 35. 1 36. 3  
 37. 4 38. 3 39. 4 40. 1  
 41. 4 42. 4 43. 2 44. 3  
 45. 3 46. 1 47. 3 48. 2  
 49. 4 50. 3 51. 1 52. 2  
 53. 2 54. 1 55. 4 56. 3  
 57. 2 58. 3 59. 1 60. 4  
 61. 3 62. 1 63. 3 64. 2  
 65. 3 66. 1 67. 1 and 3 68. 2  
 69. 4 70. 1 71. 4 72. 1  
 73. 4 74. 2 75. 4 76. 4  
 77. 1 78. 1 79. 4 80. 1  
 81. 1 82. 3 83. 3 84. 4  
 85. 1 86. 3 87. 3 88. 4  
 89. 3 90. 1 91. 2 92. 4  
 93. 1 94. 3 95. 3 and 4 96. 4  
 97. 2 98. 2 99. 2 100. 4 
 ?Observations:  
13. Incorrect Question 
 21. No option is correct  
 22. Incorrect Question 
Page 2


 
   
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
 ANSWER KEYS (SET – C) 
 
 1. 4 2. 3 3. 2 4. 2 
 5 4 6. 4 7. 2 8. 2 
 9. 4 10. 3 11. 4 12. 3 
 13. ? 14. 4 15. 2 16. 3 
 17. 3 18. 2 19. 2 20. 1 
 21. ? 22. ? 23. 1 24. 2  
 25. 3 26. 3 27 2 28. 3  
 29. 1 30. 3 31. 2 32. 3 
 33. 2 34. 1 35. 1 36. 3  
 37. 4 38. 3 39. 4 40. 1  
 41. 4 42. 4 43. 2 44. 3  
 45. 3 46. 1 47. 3 48. 2  
 49. 4 50. 3 51. 1 52. 2  
 53. 2 54. 1 55. 4 56. 3  
 57. 2 58. 3 59. 1 60. 4  
 61. 3 62. 1 63. 3 64. 2  
 65. 3 66. 1 67. 1 and 3 68. 2  
 69. 4 70. 1 71. 4 72. 1  
 73. 4 74. 2 75. 4 76. 4  
 77. 1 78. 1 79. 4 80. 1  
 81. 1 82. 3 83. 3 84. 4  
 85. 1 86. 3 87. 3 88. 4  
 89. 3 90. 1 91. 2 92. 4  
 93. 1 94. 3 95. 3 and 4 96. 4  
 97. 2 98. 2 99. 2 100. 4 
 ?Observations:  
13. Incorrect Question 
 21. No option is correct  
 22. Incorrect Question 
 
   
 
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
HINTS & SOLUTIONS (SET – C) 
 
1. 4 
1.  gravitational field inside the spherical shell is zero. So, force is zero. 
 
2. 3 
2.  Plaster of Paris is hygroscopic and absorbs water readily. 
 
3. 2 
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when 
treated with Na metal; 
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2 
gas. 
 
4. 2 
 
5. 4 
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons. 
 
6. 4 
 
7. 2 
 
8. 2 
8. Organ which look different and perform different functions but have similar basic structure 
and origin are called Homologous organs. 
 
9. 4 
9. N – W = m(3g)    ;   W = mg 
 N = 4W 
 
10. 3 
10. In human male, scrotum is called thermo regulator. 
 
11. 4 
 
12. 3 
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum. 
 
13. ? (best possible answer is option (2) if the question is 
3
a 3b
28 10 3 7 4 3
=+
+ - -
. 
13. 
3
a 3b
28 10 3 7 4 3
=+
+ - -
 
 
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
 
Page 3


 
   
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
 ANSWER KEYS (SET – C) 
 
 1. 4 2. 3 3. 2 4. 2 
 5 4 6. 4 7. 2 8. 2 
 9. 4 10. 3 11. 4 12. 3 
 13. ? 14. 4 15. 2 16. 3 
 17. 3 18. 2 19. 2 20. 1 
 21. ? 22. ? 23. 1 24. 2  
 25. 3 26. 3 27 2 28. 3  
 29. 1 30. 3 31. 2 32. 3 
 33. 2 34. 1 35. 1 36. 3  
 37. 4 38. 3 39. 4 40. 1  
 41. 4 42. 4 43. 2 44. 3  
 45. 3 46. 1 47. 3 48. 2  
 49. 4 50. 3 51. 1 52. 2  
 53. 2 54. 1 55. 4 56. 3  
 57. 2 58. 3 59. 1 60. 4  
 61. 3 62. 1 63. 3 64. 2  
 65. 3 66. 1 67. 1 and 3 68. 2  
 69. 4 70. 1 71. 4 72. 1  
 73. 4 74. 2 75. 4 76. 4  
 77. 1 78. 1 79. 4 80. 1  
 81. 1 82. 3 83. 3 84. 4  
 85. 1 86. 3 87. 3 88. 4  
 89. 3 90. 1 91. 2 92. 4  
 93. 1 94. 3 95. 3 and 4 96. 4  
 97. 2 98. 2 99. 2 100. 4 
 ?Observations:  
13. Incorrect Question 
 21. No option is correct  
 22. Incorrect Question 
 
   
 
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
HINTS & SOLUTIONS (SET – C) 
 
1. 4 
1.  gravitational field inside the spherical shell is zero. So, force is zero. 
 
2. 3 
2.  Plaster of Paris is hygroscopic and absorbs water readily. 
 
3. 2 
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when 
treated with Na metal; 
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2 
gas. 
 
4. 2 
 
5. 4 
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons. 
 
6. 4 
 
7. 2 
 
8. 2 
8. Organ which look different and perform different functions but have similar basic structure 
and origin are called Homologous organs. 
 
9. 4 
9. N – W = m(3g)    ;   W = mg 
 N = 4W 
 
10. 3 
10. In human male, scrotum is called thermo regulator. 
 
11. 4 
 
12. 3 
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum. 
 
13. ? (best possible answer is option (2) if the question is 
3
a 3b
28 10 3 7 4 3
=+
+ - -
. 
13. 
3
a 3b
28 10 3 7 4 3
=+
+ - -
 
 
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
 
 
   
 
 
3
a 3b
3 2 3
? = +
+
 
 
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
 
 2 3 3 a 3b ? - = + 
 a 3, b 2 ? = - = 
 5a 12b 15 24 3 ? + ? - + = 
 
14. 4 
14. 2x 3y A 0 + - = 
 x 2y B 0 + - = 
 
x y 1
3B 2A A 2B 4 3
==
- + - + -
 
 x 2A 3B =- 
 y 2B A =- 
 Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + - 
 10A 3A 15B 6B = - - + 
 AB ?- 
 Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - - 
 6A 5A 9B 10B = + - - 
 11A 19B A B = - ? + 
 Option 3 : 3x 5y 11A 19B A B - = - ? - 
 Option 4 : 3x 5y 6A 5A 9B 10B + = - - + 
 = A + B  
 ? Option (4) satisfies  
 
 
15. 2 
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2. 
 
16. 3 
16. 
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
 has -OH (alcohol);  
O C (Ketone) and CH --
O
 (aldehyde) as functional groups. 
 
17. 3 
17. v
2
 = 2as 
 y
2
 ? x 
 
V 
S 
 
 
 
 
18. 2 
18. 
1
N 9k 6 =+ ?(1) 
 
2
N 21 k 12 =+ ( ) 2 ? 
Page 4


 
   
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
 ANSWER KEYS (SET – C) 
 
 1. 4 2. 3 3. 2 4. 2 
 5 4 6. 4 7. 2 8. 2 
 9. 4 10. 3 11. 4 12. 3 
 13. ? 14. 4 15. 2 16. 3 
 17. 3 18. 2 19. 2 20. 1 
 21. ? 22. ? 23. 1 24. 2  
 25. 3 26. 3 27 2 28. 3  
 29. 1 30. 3 31. 2 32. 3 
 33. 2 34. 1 35. 1 36. 3  
 37. 4 38. 3 39. 4 40. 1  
 41. 4 42. 4 43. 2 44. 3  
 45. 3 46. 1 47. 3 48. 2  
 49. 4 50. 3 51. 1 52. 2  
 53. 2 54. 1 55. 4 56. 3  
 57. 2 58. 3 59. 1 60. 4  
 61. 3 62. 1 63. 3 64. 2  
 65. 3 66. 1 67. 1 and 3 68. 2  
 69. 4 70. 1 71. 4 72. 1  
 73. 4 74. 2 75. 4 76. 4  
 77. 1 78. 1 79. 4 80. 1  
 81. 1 82. 3 83. 3 84. 4  
 85. 1 86. 3 87. 3 88. 4  
 89. 3 90. 1 91. 2 92. 4  
 93. 1 94. 3 95. 3 and 4 96. 4  
 97. 2 98. 2 99. 2 100. 4 
 ?Observations:  
13. Incorrect Question 
 21. No option is correct  
 22. Incorrect Question 
 
   
 
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
HINTS & SOLUTIONS (SET – C) 
 
1. 4 
1.  gravitational field inside the spherical shell is zero. So, force is zero. 
 
2. 3 
2.  Plaster of Paris is hygroscopic and absorbs water readily. 
 
3. 2 
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when 
treated with Na metal; 
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2 
gas. 
 
4. 2 
 
5. 4 
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons. 
 
6. 4 
 
7. 2 
 
8. 2 
8. Organ which look different and perform different functions but have similar basic structure 
and origin are called Homologous organs. 
 
9. 4 
9. N – W = m(3g)    ;   W = mg 
 N = 4W 
 
10. 3 
10. In human male, scrotum is called thermo regulator. 
 
11. 4 
 
12. 3 
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum. 
 
13. ? (best possible answer is option (2) if the question is 
3
a 3b
28 10 3 7 4 3
=+
+ - -
. 
13. 
3
a 3b
28 10 3 7 4 3
=+
+ - -
 
 
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
 
 
   
 
 
3
a 3b
3 2 3
? = +
+
 
 
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
 
 2 3 3 a 3b ? - = + 
 a 3, b 2 ? = - = 
 5a 12b 15 24 3 ? + ? - + = 
 
14. 4 
14. 2x 3y A 0 + - = 
 x 2y B 0 + - = 
 
x y 1
3B 2A A 2B 4 3
==
- + - + -
 
 x 2A 3B =- 
 y 2B A =- 
 Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + - 
 10A 3A 15B 6B = - - + 
 AB ?- 
 Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - - 
 6A 5A 9B 10B = + - - 
 11A 19B A B = - ? + 
 Option 3 : 3x 5y 11A 19B A B - = - ? - 
 Option 4 : 3x 5y 6A 5A 9B 10B + = - - + 
 = A + B  
 ? Option (4) satisfies  
 
 
15. 2 
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2. 
 
16. 3 
16. 
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
 has -OH (alcohol);  
O C (Ketone) and CH --
O
 (aldehyde) as functional groups. 
 
17. 3 
17. v
2
 = 2as 
 y
2
 ? x 
 
V 
S 
 
 
 
 
18. 2 
18. 
1
N 9k 6 =+ ?(1) 
 
2
N 21 k 12 =+ ( ) 2 ? 
 
   
 
 First such number (greater than 100) 
 = 159  
 and other numbers will be 159, 222, 285,….,  
 ( ) 159 63 n 1 400 ? + - ? 
 n 1 3.8 ? - ? 
 n 4.8 ?? 
 n4 ?= 
 ? 4 terms  
 
19. 2 
19. MCl3 ? M has +3 oxidation state, so it belongs to Aluminium family. 
 
 
20. 1 
20. Crura cerebri is not a part of hind brain. 
 
21. No option is correct. 
21. 2T = Mg 2T sin 60 = Mg 2T cos 30° = Mg 2T cos 60° = Mg 
 
Mg
T
2
= 
3
2T Mg
2
= 
3
2T Mg
2
?= 
1
2T Mg
2
?= 
  
Mg
T
3
= 
Mg
T
3
= T = Mg 
 Maximum tension in (IV) case. 
 
22. ? 
22. No integral values of a, b and c satisfy any of the options.   
 
23. 1 
23. Blood cells are manufactured in our bone marrow. 
 
24. 2 
24. ( )
4
a sin cos = ? - ? 
 
( )
2
22
sin cos 2sin cos = ? + ? - ? ? 
 ( ) 1 2sin cos = - ? ? 
 
22
1 4sin cos 4sin cos = - ? ? + ? ? 
 
66
b sin cos = ? + ? 
 
( ) ( )
33
22
sin cos = ? + ? 
 
( ) ( )
2 2 4 4 2 2
sin cos sin cos sin cos = ? + ? ? + ? - ? ? 
 
( )
( )
2
2 2 2 2
sin cos 3sin cos = ? + ? - ? ? 
 
22
1 3sin cos = - ? ? 
 ( )
2
c sin cos = ? + ? 1 2sin cos = + ? ? 
 
2 2 2 2
3a 4b 6c 3 12sin cos 12sin cos 4 12sin cos 6 12sin cos 13 + + = - ? ? + ? ? + - ? ? + + ? ? = 
 3a 4b 6c 13 + + = lies between 9 and 16  
 ? lies between 3 and 4  
 
 
25. 3 
25.  geff is zero. 
 
Page 5


 
   
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
 ANSWER KEYS (SET – C) 
 
 1. 4 2. 3 3. 2 4. 2 
 5 4 6. 4 7. 2 8. 2 
 9. 4 10. 3 11. 4 12. 3 
 13. ? 14. 4 15. 2 16. 3 
 17. 3 18. 2 19. 2 20. 1 
 21. ? 22. ? 23. 1 24. 2  
 25. 3 26. 3 27 2 28. 3  
 29. 1 30. 3 31. 2 32. 3 
 33. 2 34. 1 35. 1 36. 3  
 37. 4 38. 3 39. 4 40. 1  
 41. 4 42. 4 43. 2 44. 3  
 45. 3 46. 1 47. 3 48. 2  
 49. 4 50. 3 51. 1 52. 2  
 53. 2 54. 1 55. 4 56. 3  
 57. 2 58. 3 59. 1 60. 4  
 61. 3 62. 1 63. 3 64. 2  
 65. 3 66. 1 67. 1 and 3 68. 2  
 69. 4 70. 1 71. 4 72. 1  
 73. 4 74. 2 75. 4 76. 4  
 77. 1 78. 1 79. 4 80. 1  
 81. 1 82. 3 83. 3 84. 4  
 85. 1 86. 3 87. 3 88. 4  
 89. 3 90. 1 91. 2 92. 4  
 93. 1 94. 3 95. 3 and 4 96. 4  
 97. 2 98. 2 99. 2 100. 4 
 ?Observations:  
13. Incorrect Question 
 21. No option is correct  
 22. Incorrect Question 
 
   
 
 
NTSE STAGE – I (HARYANA STATE) 
 (For Class – X) 
SCHOLASTIC APTITUDE TEST (SAT) 
 
HINTS & SOLUTIONS (SET – C) 
 
1. 4 
1.  gravitational field inside the spherical shell is zero. So, force is zero. 
 
2. 3 
2.  Plaster of Paris is hygroscopic and absorbs water readily. 
 
3. 2 
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when 
treated with Na metal; 
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2 
gas. 
 
4. 2 
 
5. 4 
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons. 
 
6. 4 
 
7. 2 
 
8. 2 
8. Organ which look different and perform different functions but have similar basic structure 
and origin are called Homologous organs. 
 
9. 4 
9. N – W = m(3g)    ;   W = mg 
 N = 4W 
 
10. 3 
10. In human male, scrotum is called thermo regulator. 
 
11. 4 
 
12. 3 
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum. 
 
13. ? (best possible answer is option (2) if the question is 
3
a 3b
28 10 3 7 4 3
=+
+ - -
. 
13. 
3
a 3b
28 10 3 7 4 3
=+
+ - -
 
 
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
 
 
   
 
 
3
a 3b
3 2 3
? = +
+
 
 
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
 
 2 3 3 a 3b ? - = + 
 a 3, b 2 ? = - = 
 5a 12b 15 24 3 ? + ? - + = 
 
14. 4 
14. 2x 3y A 0 + - = 
 x 2y B 0 + - = 
 
x y 1
3B 2A A 2B 4 3
==
- + - + -
 
 x 2A 3B =- 
 y 2B A =- 
 Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + - 
 10A 3A 15B 6B = - - + 
 AB ?- 
 Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - - 
 6A 5A 9B 10B = + - - 
 11A 19B A B = - ? + 
 Option 3 : 3x 5y 11A 19B A B - = - ? - 
 Option 4 : 3x 5y 6A 5A 9B 10B + = - - + 
 = A + B  
 ? Option (4) satisfies  
 
 
15. 2 
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2. 
 
16. 3 
16. 
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
 has -OH (alcohol);  
O C (Ketone) and CH --
O
 (aldehyde) as functional groups. 
 
17. 3 
17. v
2
 = 2as 
 y
2
 ? x 
 
V 
S 
 
 
 
 
18. 2 
18. 
1
N 9k 6 =+ ?(1) 
 
2
N 21 k 12 =+ ( ) 2 ? 
 
   
 
 First such number (greater than 100) 
 = 159  
 and other numbers will be 159, 222, 285,….,  
 ( ) 159 63 n 1 400 ? + - ? 
 n 1 3.8 ? - ? 
 n 4.8 ?? 
 n4 ?= 
 ? 4 terms  
 
19. 2 
19. MCl3 ? M has +3 oxidation state, so it belongs to Aluminium family. 
 
 
20. 1 
20. Crura cerebri is not a part of hind brain. 
 
21. No option is correct. 
21. 2T = Mg 2T sin 60 = Mg 2T cos 30° = Mg 2T cos 60° = Mg 
 
Mg
T
2
= 
3
2T Mg
2
= 
3
2T Mg
2
?= 
1
2T Mg
2
?= 
  
Mg
T
3
= 
Mg
T
3
= T = Mg 
 Maximum tension in (IV) case. 
 
22. ? 
22. No integral values of a, b and c satisfy any of the options.   
 
23. 1 
23. Blood cells are manufactured in our bone marrow. 
 
24. 2 
24. ( )
4
a sin cos = ? - ? 
 
( )
2
22
sin cos 2sin cos = ? + ? - ? ? 
 ( ) 1 2sin cos = - ? ? 
 
22
1 4sin cos 4sin cos = - ? ? + ? ? 
 
66
b sin cos = ? + ? 
 
( ) ( )
33
22
sin cos = ? + ? 
 
( ) ( )
2 2 4 4 2 2
sin cos sin cos sin cos = ? + ? ? + ? - ? ? 
 
( )
( )
2
2 2 2 2
sin cos 3sin cos = ? + ? - ? ? 
 
22
1 3sin cos = - ? ? 
 ( )
2
c sin cos = ? + ? 1 2sin cos = + ? ? 
 
2 2 2 2
3a 4b 6c 3 12sin cos 12sin cos 4 12sin cos 6 12sin cos 13 + + = - ? ? + ? ? + - ? ? + + ? ? = 
 3a 4b 6c 13 + + = lies between 9 and 16  
 ? lies between 3 and 4  
 
 
25. 3 
25.  geff is zero. 
 
 
   
 
26. 3 
 
27. 2 
27. Osmoregulation is the process of maintaining proper amount of water and proper ionic 
balance in the body. 
 
28. 3 
 
29. 1 
 
30. 3 
 
31. 2 
31. Arthritis is a chronic disease. 
 
32. 3 
32. First common term = 10  
 
12
d 3, d 8 == 
 ? difference in series of common terms  
 = l.c. m of 
1
d and 
2
d 
 = 24  
 ? Common term series  
 = 10, 34, 58  
 100
th
 term of series 1 ( ) 1 99 3 =+ 
                                      = 298  
 ( ) 10 24 n 1 298 + - ? 
 ( ) 24 n 1 288 -? 
 ( ) n 1 12 -? 
 n 13 ? 
 n 13 = 
 
33. 2 
 
34. 1 
34. Using Fleming’s left hand rule. 
 
35. 1 
35. 
s
P
V
?
=
?
 ? ? Density 
 Due to presence of water molecules, density of air decreases. 
 
 
36. 3 
36. 
o
360
40
N
? 
 N9 ? 
 ( ) 180 N 2 1980 -? 
 N 2 11 -? 
 N 13 ? 
 N can be equal to 10, 11 or 12.  
 ? N can take 3 values.  
 
37. 4 
 
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