Page 1
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
ANSWER KEYS
1. 2 2. 3 3. 4 4. 4
5. 1 6. 3 7. 1 8. 1
9. 2 10. 2 11. 3 12. 1
13. 3 14. 4 15. 1 16. 2
17. 4 18. 3 19. 1 20. 1
21. 3 22. 1 23. 4 24. 3
25. 4 26. 3 27. 4 28. 3
29. 4 30. 3 31. 3 32. 2
33. 2 34. 3 35. 1 36. 4
37. 4 38. 1 39. 1 40. 3
41. 2 42. 4 43. 4 44. 4
45. 1 46. 4 47. 3 48. 1
49. 2 50. 4 51. 1 & 4 both 52. 2
53. 2 54. 1 55. 2 56. 2
57. 3 58. 4 59. 3 60. 2
61. 2 62. 2 63. 2 64. 2
65. 4 66. 1 67. 4 68. 3
69 1 70. 1 71. 2 72. 1
73. 4 74. 4 75. Bonus 76. 2
77. 2 78. 1 79. 4 80. 2
81. 1 82. 2 83. 4 84. 4
85. 3 & 4 86. 4 87. 3 88. 1
89. Bonus 90. 1 91. 2 92. 4
93. 3 94. 3 95. 2 96. 2
97. 4 98. 3 99. 4 100. 4
Page 2
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
ANSWER KEYS
1. 2 2. 3 3. 4 4. 4
5. 1 6. 3 7. 1 8. 1
9. 2 10. 2 11. 3 12. 1
13. 3 14. 4 15. 1 16. 2
17. 4 18. 3 19. 1 20. 1
21. 3 22. 1 23. 4 24. 3
25. 4 26. 3 27. 4 28. 3
29. 4 30. 3 31. 3 32. 2
33. 2 34. 3 35. 1 36. 4
37. 4 38. 1 39. 1 40. 3
41. 2 42. 4 43. 4 44. 4
45. 1 46. 4 47. 3 48. 1
49. 2 50. 4 51. 1 & 4 both 52. 2
53. 2 54. 1 55. 2 56. 2
57. 3 58. 4 59. 3 60. 2
61. 2 62. 2 63. 2 64. 2
65. 4 66. 1 67. 4 68. 3
69 1 70. 1 71. 2 72. 1
73. 4 74. 4 75. Bonus 76. 2
77. 2 78. 1 79. 4 80. 2
81. 1 82. 2 83. 4 84. 4
85. 3 & 4 86. 4 87. 3 88. 1
89. Bonus 90. 1 91. 2 92. 4
93. 3 94. 3 95. 2 96. 2
97. 4 98. 3 99. 4 100. 4
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
SOLUTIONS
1. 2
1. ?(–2) series
2. 3
2. Denominator decreases by factor
2
3
3. 4
3. Middle term is product of two of its adjacent terms.
6 ? 7 = 42
4. 4
4. 1
st
series ? +3, +3, +3
2
nd
series ? ?2, ?2, ?2
20 ? 2 = 40
5. 1
5. Dual series
1
st
series ? –10, –8, –6
2
nd
series ? ?3, ?2, ?1
? 12 – 6 = 6
6. 3
6. (3 + 4)
2
= 49, (7 + 5)
2
= 144
(5 + 1)
2
= 36
? (8 + 2)
2
= 100
7. 1
7. 21 – 11 = 10/2 = 5
33 – 17 = 16/2 = 8
29 – 15 = 14/2 = 7
8. 1
8. (4
2
+ 3
2
) / (2 + 5) = 2.50
(6
2
+ 8
2
) / (4 + 2) = 12.50
Similarly,
(5
2
+ 2
2
) / (9 + 2) = 1.61
9. 2
9. Both middle boxes are opposite faces for 5 ? 2
10. 2
Page 3
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
ANSWER KEYS
1. 2 2. 3 3. 4 4. 4
5. 1 6. 3 7. 1 8. 1
9. 2 10. 2 11. 3 12. 1
13. 3 14. 4 15. 1 16. 2
17. 4 18. 3 19. 1 20. 1
21. 3 22. 1 23. 4 24. 3
25. 4 26. 3 27. 4 28. 3
29. 4 30. 3 31. 3 32. 2
33. 2 34. 3 35. 1 36. 4
37. 4 38. 1 39. 1 40. 3
41. 2 42. 4 43. 4 44. 4
45. 1 46. 4 47. 3 48. 1
49. 2 50. 4 51. 1 & 4 both 52. 2
53. 2 54. 1 55. 2 56. 2
57. 3 58. 4 59. 3 60. 2
61. 2 62. 2 63. 2 64. 2
65. 4 66. 1 67. 4 68. 3
69 1 70. 1 71. 2 72. 1
73. 4 74. 4 75. Bonus 76. 2
77. 2 78. 1 79. 4 80. 2
81. 1 82. 2 83. 4 84. 4
85. 3 & 4 86. 4 87. 3 88. 1
89. Bonus 90. 1 91. 2 92. 4
93. 3 94. 3 95. 2 96. 2
97. 4 98. 3 99. 4 100. 4
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
SOLUTIONS
1. 2
1. ?(–2) series
2. 3
2. Denominator decreases by factor
2
3
3. 4
3. Middle term is product of two of its adjacent terms.
6 ? 7 = 42
4. 4
4. 1
st
series ? +3, +3, +3
2
nd
series ? ?2, ?2, ?2
20 ? 2 = 40
5. 1
5. Dual series
1
st
series ? –10, –8, –6
2
nd
series ? ?3, ?2, ?1
? 12 – 6 = 6
6. 3
6. (3 + 4)
2
= 49, (7 + 5)
2
= 144
(5 + 1)
2
= 36
? (8 + 2)
2
= 100
7. 1
7. 21 – 11 = 10/2 = 5
33 – 17 = 16/2 = 8
29 – 15 = 14/2 = 7
8. 1
8. (4
2
+ 3
2
) / (2 + 5) = 2.50
(6
2
+ 8
2
) / (4 + 2) = 12.50
Similarly,
(5
2
+ 2
2
) / (9 + 2) = 1.61
9. 2
9. Both middle boxes are opposite faces for 5 ? 2
10. 2
10.
1 fig ? 7
2 fig ? 7
4 fig ? 1
7 fig ? 1
11 fig ? 1
Total = 17
11. 3
11.
H
A
B C D
E
F G
AH, AB, HF, BD, HB, FD, HD, BF, GC, AE, AF, AD
Total = 12
12. 1
12.
1
2
3
4
5
1 2 3 4 5 6
(1 + 2 + 3 + 4 + 5 + 6) ? ((1 + 2 + 3 + 4)
= 21 ? 15 = 315
13. 3
13.
P
Q
S
U
T
R
14. 4
14.
P
Q
S
U
T
R
15. 1
Page 4
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
ANSWER KEYS
1. 2 2. 3 3. 4 4. 4
5. 1 6. 3 7. 1 8. 1
9. 2 10. 2 11. 3 12. 1
13. 3 14. 4 15. 1 16. 2
17. 4 18. 3 19. 1 20. 1
21. 3 22. 1 23. 4 24. 3
25. 4 26. 3 27. 4 28. 3
29. 4 30. 3 31. 3 32. 2
33. 2 34. 3 35. 1 36. 4
37. 4 38. 1 39. 1 40. 3
41. 2 42. 4 43. 4 44. 4
45. 1 46. 4 47. 3 48. 1
49. 2 50. 4 51. 1 & 4 both 52. 2
53. 2 54. 1 55. 2 56. 2
57. 3 58. 4 59. 3 60. 2
61. 2 62. 2 63. 2 64. 2
65. 4 66. 1 67. 4 68. 3
69 1 70. 1 71. 2 72. 1
73. 4 74. 4 75. Bonus 76. 2
77. 2 78. 1 79. 4 80. 2
81. 1 82. 2 83. 4 84. 4
85. 3 & 4 86. 4 87. 3 88. 1
89. Bonus 90. 1 91. 2 92. 4
93. 3 94. 3 95. 2 96. 2
97. 4 98. 3 99. 4 100. 4
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
SOLUTIONS
1. 2
1. ?(–2) series
2. 3
2. Denominator decreases by factor
2
3
3. 4
3. Middle term is product of two of its adjacent terms.
6 ? 7 = 42
4. 4
4. 1
st
series ? +3, +3, +3
2
nd
series ? ?2, ?2, ?2
20 ? 2 = 40
5. 1
5. Dual series
1
st
series ? –10, –8, –6
2
nd
series ? ?3, ?2, ?1
? 12 – 6 = 6
6. 3
6. (3 + 4)
2
= 49, (7 + 5)
2
= 144
(5 + 1)
2
= 36
? (8 + 2)
2
= 100
7. 1
7. 21 – 11 = 10/2 = 5
33 – 17 = 16/2 = 8
29 – 15 = 14/2 = 7
8. 1
8. (4
2
+ 3
2
) / (2 + 5) = 2.50
(6
2
+ 8
2
) / (4 + 2) = 12.50
Similarly,
(5
2
+ 2
2
) / (9 + 2) = 1.61
9. 2
9. Both middle boxes are opposite faces for 5 ? 2
10. 2
10.
1 fig ? 7
2 fig ? 7
4 fig ? 1
7 fig ? 1
11 fig ? 1
Total = 17
11. 3
11.
H
A
B C D
E
F G
AH, AB, HF, BD, HB, FD, HD, BF, GC, AE, AF, AD
Total = 12
12. 1
12.
1
2
3
4
5
1 2 3 4 5 6
(1 + 2 + 3 + 4 + 5 + 6) ? ((1 + 2 + 3 + 4)
= 21 ? 15 = 315
13. 3
13.
P
Q
S
U
T
R
14. 4
14.
P
Q
S
U
T
R
15. 1
15.
P
Q
S
U
T
R
16. 2
16. Through option (2)
Male
Female
M R
S
Q
17. 4
17. From option (4)
J
M
W
M is grandfather of W.
18. 3
18. From Option (3)
748 and 518 written as
874 – 851 = 23 (minimum)
19. 1
19. S L 2 = ? P C 7 % E H @ ? 8 K B M 5 T V 3
Only 1
20. 1
20. S L = ? P C % E H @ ? K B M T V 3 *
14 – 7 = 7
th
from left is %
21. 3
21. S L 2 = ? P C 7 % E H @ ? K B M 5 T V 3 *
22. 1
22. Father is related to speed, all others are related to size.
23. 4
23. The nearest meaning of ROSE is STOOD.
24. 3
Page 5
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
ANSWER KEYS
1. 2 2. 3 3. 4 4. 4
5. 1 6. 3 7. 1 8. 1
9. 2 10. 2 11. 3 12. 1
13. 3 14. 4 15. 1 16. 2
17. 4 18. 3 19. 1 20. 1
21. 3 22. 1 23. 4 24. 3
25. 4 26. 3 27. 4 28. 3
29. 4 30. 3 31. 3 32. 2
33. 2 34. 3 35. 1 36. 4
37. 4 38. 1 39. 1 40. 3
41. 2 42. 4 43. 4 44. 4
45. 1 46. 4 47. 3 48. 1
49. 2 50. 4 51. 1 & 4 both 52. 2
53. 2 54. 1 55. 2 56. 2
57. 3 58. 4 59. 3 60. 2
61. 2 62. 2 63. 2 64. 2
65. 4 66. 1 67. 4 68. 3
69 1 70. 1 71. 2 72. 1
73. 4 74. 4 75. Bonus 76. 2
77. 2 78. 1 79. 4 80. 2
81. 1 82. 2 83. 4 84. 4
85. 3 & 4 86. 4 87. 3 88. 1
89. Bonus 90. 1 91. 2 92. 4
93. 3 94. 3 95. 2 96. 2
97. 4 98. 3 99. 4 100. 4
NTSE STAGE – I (HARYANA STATE)
SET – A
(2020 – 21)
(For Class – X)
MENTAL ABILITY TEST (MAT)
SOLUTIONS
1. 2
1. ?(–2) series
2. 3
2. Denominator decreases by factor
2
3
3. 4
3. Middle term is product of two of its adjacent terms.
6 ? 7 = 42
4. 4
4. 1
st
series ? +3, +3, +3
2
nd
series ? ?2, ?2, ?2
20 ? 2 = 40
5. 1
5. Dual series
1
st
series ? –10, –8, –6
2
nd
series ? ?3, ?2, ?1
? 12 – 6 = 6
6. 3
6. (3 + 4)
2
= 49, (7 + 5)
2
= 144
(5 + 1)
2
= 36
? (8 + 2)
2
= 100
7. 1
7. 21 – 11 = 10/2 = 5
33 – 17 = 16/2 = 8
29 – 15 = 14/2 = 7
8. 1
8. (4
2
+ 3
2
) / (2 + 5) = 2.50
(6
2
+ 8
2
) / (4 + 2) = 12.50
Similarly,
(5
2
+ 2
2
) / (9 + 2) = 1.61
9. 2
9. Both middle boxes are opposite faces for 5 ? 2
10. 2
10.
1 fig ? 7
2 fig ? 7
4 fig ? 1
7 fig ? 1
11 fig ? 1
Total = 17
11. 3
11.
H
A
B C D
E
F G
AH, AB, HF, BD, HB, FD, HD, BF, GC, AE, AF, AD
Total = 12
12. 1
12.
1
2
3
4
5
1 2 3 4 5 6
(1 + 2 + 3 + 4 + 5 + 6) ? ((1 + 2 + 3 + 4)
= 21 ? 15 = 315
13. 3
13.
P
Q
S
U
T
R
14. 4
14.
P
Q
S
U
T
R
15. 1
15.
P
Q
S
U
T
R
16. 2
16. Through option (2)
Male
Female
M R
S
Q
17. 4
17. From option (4)
J
M
W
M is grandfather of W.
18. 3
18. From Option (3)
748 and 518 written as
874 – 851 = 23 (minimum)
19. 1
19. S L 2 = ? P C 7 % E H @ ? 8 K B M 5 T V 3
Only 1
20. 1
20. S L = ? P C % E H @ ? K B M T V 3 *
14 – 7 = 7
th
from left is %
21. 3
21. S L 2 = ? P C 7 % E H @ ? K B M 5 T V 3 *
22. 1
22. Father is related to speed, all others are related to size.
23. 4
23. The nearest meaning of ROSE is STOOD.
24. 3
24.
North
15
Starting point
10
10
5
25. 4
25. His mother’s only daughter is his sister who is mother of Radha.
So, Radha is niece of the man.
26. 3
26. 40 + 12 ? 3 ? 6 – 60
40 + 24 – 60
64 – 60 = 4
27. 4
27. (4) ? 3 words
As, to, under
28. 3
28. Day before yesterday ? Thursday
Today ? Saturday
Tomorrow ? Sunday
29. 4
29. (A) Palisade
(E) Process
(D) Profession
(B) Protect
(C) Pursuit
30. 3
30. (E) Collapse
(B) Compensate
(A) Credential
(C) Credible
(D) Cremate
31. 3
31. Curator is incharge of museum.
Jailor is incharge of prison.
32. 2
32. L A B O U R
3 1 2 5 6 4
33. 2
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