Page 1
CHANDIGARH NTSE STAGE 1 2019-20
(MENTAL ABILITY TEST)
ANSWER KEYS
1. B 2. D 3. A 4. B 5. C
6. B 7. A 8. D 9. C 10. B
11. C 12. B 13. B 14. D 15. B
16. D 17. C 18. B 19. B 20. C
21. D 22. ** 23. B 24. B 25. B
26. B 27. A 28. C 29. A 30. D
31. B 32. C 33. D 34. D 35. D
36. A 37. B 38. A 39. D 40. B
41. A 42. C 43. D 44. C 45. D
46. D 47. ** 48. B 49. D 50. C
51. A 52. A 53. D 54. B 55. **
56. C 57. C 58. D 59. D 60. C
61. A 62. B 63. B 64. B 65. B
66. C 67. C 68. C 69. C 70. B
71. C 72. C 73. B 74. B 75. D
76. D 77. B 78. D 79. C 80. B
81. C 82. A 83. B 84. D 85. A
86. C 87. A 88. C 89. D 90. C
91. C 92. A 93. A 94. A 95. C
96. D 97. B 98. A 99. B 100. D
** None of the option is correct.
Page 2
CHANDIGARH NTSE STAGE 1 2019-20
(MENTAL ABILITY TEST)
ANSWER KEYS
1. B 2. D 3. A 4. B 5. C
6. B 7. A 8. D 9. C 10. B
11. C 12. B 13. B 14. D 15. B
16. D 17. C 18. B 19. B 20. C
21. D 22. ** 23. B 24. B 25. B
26. B 27. A 28. C 29. A 30. D
31. B 32. C 33. D 34. D 35. D
36. A 37. B 38. A 39. D 40. B
41. A 42. C 43. D 44. C 45. D
46. D 47. ** 48. B 49. D 50. C
51. A 52. A 53. D 54. B 55. **
56. C 57. C 58. D 59. D 60. C
61. A 62. B 63. B 64. B 65. B
66. C 67. C 68. C 69. C 70. B
71. C 72. C 73. B 74. B 75. D
76. D 77. B 78. D 79. C 80. B
81. C 82. A 83. B 84. D 85. A
86. C 87. A 88. C 89. D 90. C
91. C 92. A 93. A 94. A 95. C
96. D 97. B 98. A 99. B 100. D
** None of the option is correct.
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-2
Solution
1. B
Sol. ×2+1, × 2 + 2, × 2 + 3................
2. D
Sol. difference is 3 + 8 = 11, 4 + 9 = 13, 6+ 2 = 8, 7 + 0 = 7, 7 + 7 = 14
3. A
Sol. 3
2
+ 4 = 13, 4
2
+ 5 = 21, 5
5
+ 6 = 31, 7
2
+ 6 = 55
4. B
Sol. 1
2
, 2
3
, 3
2
, 4
3
, 5
2
, 6
3
, 7
2
, 8
3
5. C
Sol. A + 2 = C + 2 = E + 2 = G + 2 = I
Y – 2 = W – 2 = U – 2 = S – 2 = Q
6. B
Sol. 1
3
+ 1
2
, 2
3
+ 2
2
, 3
3
+ 3
2
and so on
7. A
Sol. (2 × 1) + 1 = 3
(3 × 2) + 2 = 8
(8 × 3) + 3 = 27
(27 × 4) + 4 = 112
8. D
Sol. difference is 1 × 2 = 2, 1 × 4 = 4, 1 × 8 = 8, 2 × 6 = 12, 3 × 8 = 24
9. C
Sol. If we arrange Last four alphabet it will be in sequence.
10. B
Sol. If we rearrange the alphabet it will become HARYANA, CHANDIGARH, RAJASTHAN, PUNJAB so CHANDIGARH
is odd
11. C
Sol. abba/abba/abba/..............
12. B
Sol. aaabbc/aaabbc/..............
13. B
Sol. abc/cab/bca/abc/...............
14. D
Sol. 23541/14532/23541/...............
15. B
Sol. 1022/1022/1022/...............
16. D
Sol. 3
2
+ 2
1
+ 1
1
= 12
5
2
+ 2
1
+ 4
1
= 31
17. C
Sol. (1 × 2) + (2 × 7) + (1 × 7) = 23
(3 × 4) + (4 × 5) + (5 × 3) = 47
18. B
Sol. 2
3
4
2
= 816
3
3
5
2
= 2725
Page 3
CHANDIGARH NTSE STAGE 1 2019-20
(MENTAL ABILITY TEST)
ANSWER KEYS
1. B 2. D 3. A 4. B 5. C
6. B 7. A 8. D 9. C 10. B
11. C 12. B 13. B 14. D 15. B
16. D 17. C 18. B 19. B 20. C
21. D 22. ** 23. B 24. B 25. B
26. B 27. A 28. C 29. A 30. D
31. B 32. C 33. D 34. D 35. D
36. A 37. B 38. A 39. D 40. B
41. A 42. C 43. D 44. C 45. D
46. D 47. ** 48. B 49. D 50. C
51. A 52. A 53. D 54. B 55. **
56. C 57. C 58. D 59. D 60. C
61. A 62. B 63. B 64. B 65. B
66. C 67. C 68. C 69. C 70. B
71. C 72. C 73. B 74. B 75. D
76. D 77. B 78. D 79. C 80. B
81. C 82. A 83. B 84. D 85. A
86. C 87. A 88. C 89. D 90. C
91. C 92. A 93. A 94. A 95. C
96. D 97. B 98. A 99. B 100. D
** None of the option is correct.
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-2
Solution
1. B
Sol. ×2+1, × 2 + 2, × 2 + 3................
2. D
Sol. difference is 3 + 8 = 11, 4 + 9 = 13, 6+ 2 = 8, 7 + 0 = 7, 7 + 7 = 14
3. A
Sol. 3
2
+ 4 = 13, 4
2
+ 5 = 21, 5
5
+ 6 = 31, 7
2
+ 6 = 55
4. B
Sol. 1
2
, 2
3
, 3
2
, 4
3
, 5
2
, 6
3
, 7
2
, 8
3
5. C
Sol. A + 2 = C + 2 = E + 2 = G + 2 = I
Y – 2 = W – 2 = U – 2 = S – 2 = Q
6. B
Sol. 1
3
+ 1
2
, 2
3
+ 2
2
, 3
3
+ 3
2
and so on
7. A
Sol. (2 × 1) + 1 = 3
(3 × 2) + 2 = 8
(8 × 3) + 3 = 27
(27 × 4) + 4 = 112
8. D
Sol. difference is 1 × 2 = 2, 1 × 4 = 4, 1 × 8 = 8, 2 × 6 = 12, 3 × 8 = 24
9. C
Sol. If we arrange Last four alphabet it will be in sequence.
10. B
Sol. If we rearrange the alphabet it will become HARYANA, CHANDIGARH, RAJASTHAN, PUNJAB so CHANDIGARH
is odd
11. C
Sol. abba/abba/abba/..............
12. B
Sol. aaabbc/aaabbc/..............
13. B
Sol. abc/cab/bca/abc/...............
14. D
Sol. 23541/14532/23541/...............
15. B
Sol. 1022/1022/1022/...............
16. D
Sol. 3
2
+ 2
1
+ 1
1
= 12
5
2
+ 2
1
+ 4
1
= 31
17. C
Sol. (1 × 2) + (2 × 7) + (1 × 7) = 23
(3 × 4) + (4 × 5) + (5 × 3) = 47
18. B
Sol. 2
3
4
2
= 816
3
3
5
2
= 2725
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-3
19. B
Sol. X – 1 = W D – 1 = C
V + 1 = W X + 1 = Y
R + 1 = S K + 1 = L
20. C
Sol. R = 18/2 = 9
P = 16/2 = 8
RP = 98 now interchange the position of 98
21. D
Sol. After multiplying the digit of 23 we get 6
And After multiplying the digit of 24 we get 8
Now if we multiply 6 and 8 we get 48 and so on
22. **
Sol. Wrong Question
23. B
Sol. 6 × 7 = 42
7 × 12 = 84
12 × 13 = 156
24. B
Sol. (7 – 3)
3
, (13 – 7)
3
(13 – 8)
3
= 125
Sol. (25-28) By observation
29. A
Sol. By observation
30. D
Sol. By observation
31. B
Sol. By observation
32. C
Sol. By observation
33. D
Sol. By observation
34. D
Sol. By observation
(35-37)
Sol.
38. A
Sol. 2
2
+ 4
4
+ 5
5
= 3385
39. D
Sol.
3
28 27
79
??
+
??
??
= 343
D
A
E
F
B
G
C
Brown
Blue
yellow
Pink
White
Black
Green
Page 4
CHANDIGARH NTSE STAGE 1 2019-20
(MENTAL ABILITY TEST)
ANSWER KEYS
1. B 2. D 3. A 4. B 5. C
6. B 7. A 8. D 9. C 10. B
11. C 12. B 13. B 14. D 15. B
16. D 17. C 18. B 19. B 20. C
21. D 22. ** 23. B 24. B 25. B
26. B 27. A 28. C 29. A 30. D
31. B 32. C 33. D 34. D 35. D
36. A 37. B 38. A 39. D 40. B
41. A 42. C 43. D 44. C 45. D
46. D 47. ** 48. B 49. D 50. C
51. A 52. A 53. D 54. B 55. **
56. C 57. C 58. D 59. D 60. C
61. A 62. B 63. B 64. B 65. B
66. C 67. C 68. C 69. C 70. B
71. C 72. C 73. B 74. B 75. D
76. D 77. B 78. D 79. C 80. B
81. C 82. A 83. B 84. D 85. A
86. C 87. A 88. C 89. D 90. C
91. C 92. A 93. A 94. A 95. C
96. D 97. B 98. A 99. B 100. D
** None of the option is correct.
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-2
Solution
1. B
Sol. ×2+1, × 2 + 2, × 2 + 3................
2. D
Sol. difference is 3 + 8 = 11, 4 + 9 = 13, 6+ 2 = 8, 7 + 0 = 7, 7 + 7 = 14
3. A
Sol. 3
2
+ 4 = 13, 4
2
+ 5 = 21, 5
5
+ 6 = 31, 7
2
+ 6 = 55
4. B
Sol. 1
2
, 2
3
, 3
2
, 4
3
, 5
2
, 6
3
, 7
2
, 8
3
5. C
Sol. A + 2 = C + 2 = E + 2 = G + 2 = I
Y – 2 = W – 2 = U – 2 = S – 2 = Q
6. B
Sol. 1
3
+ 1
2
, 2
3
+ 2
2
, 3
3
+ 3
2
and so on
7. A
Sol. (2 × 1) + 1 = 3
(3 × 2) + 2 = 8
(8 × 3) + 3 = 27
(27 × 4) + 4 = 112
8. D
Sol. difference is 1 × 2 = 2, 1 × 4 = 4, 1 × 8 = 8, 2 × 6 = 12, 3 × 8 = 24
9. C
Sol. If we arrange Last four alphabet it will be in sequence.
10. B
Sol. If we rearrange the alphabet it will become HARYANA, CHANDIGARH, RAJASTHAN, PUNJAB so CHANDIGARH
is odd
11. C
Sol. abba/abba/abba/..............
12. B
Sol. aaabbc/aaabbc/..............
13. B
Sol. abc/cab/bca/abc/...............
14. D
Sol. 23541/14532/23541/...............
15. B
Sol. 1022/1022/1022/...............
16. D
Sol. 3
2
+ 2
1
+ 1
1
= 12
5
2
+ 2
1
+ 4
1
= 31
17. C
Sol. (1 × 2) + (2 × 7) + (1 × 7) = 23
(3 × 4) + (4 × 5) + (5 × 3) = 47
18. B
Sol. 2
3
4
2
= 816
3
3
5
2
= 2725
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-3
19. B
Sol. X – 1 = W D – 1 = C
V + 1 = W X + 1 = Y
R + 1 = S K + 1 = L
20. C
Sol. R = 18/2 = 9
P = 16/2 = 8
RP = 98 now interchange the position of 98
21. D
Sol. After multiplying the digit of 23 we get 6
And After multiplying the digit of 24 we get 8
Now if we multiply 6 and 8 we get 48 and so on
22. **
Sol. Wrong Question
23. B
Sol. 6 × 7 = 42
7 × 12 = 84
12 × 13 = 156
24. B
Sol. (7 – 3)
3
, (13 – 7)
3
(13 – 8)
3
= 125
Sol. (25-28) By observation
29. A
Sol. By observation
30. D
Sol. By observation
31. B
Sol. By observation
32. C
Sol. By observation
33. D
Sol. By observation
34. D
Sol. By observation
(35-37)
Sol.
38. A
Sol. 2
2
+ 4
4
+ 5
5
= 3385
39. D
Sol.
3
28 27
79
??
+
??
??
= 343
D
A
E
F
B
G
C
Brown
Blue
yellow
Pink
White
Black
Green
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-4
40. B
Sol. 120 ×
2
11
=
240
11
=
9
21
11
minutes past 4
41. A
Sol. 15 Aug 2047
Complete year = 2046
Odd days
1 to 2000 = 0
46 = 46
11= 11
Jan = 3
Feb = 0
Mar = 3
Apr = 2
May = 3
Jun = 2
July = 2
15 Aug = 1
42. C
Sol. By observation
43. D
Sol. G = 7
I = 9
7
2
+ 9
2
= 130
44. C
Sol. By observation
45. D
Sol. By observation
46. D
Sol. By observation
47. **
Sol. Wrong question
48-51
Sol.
148
874
1022
+
L = 1 , E = 4, T = 8, H = 7, O = 0, S = 2
52. A
Sol. N = 14
T = 20
S = 19
E = 5 If we add all of them we get 58
53. D
Sol. O = 15
M = 13
If we multiply both of them we get 195
54. B
Sol. If we add extreme digits and multiply with middle digit we get 28, 39, 98, 96 and interchange there position to get
82, 93, 89, 69
55. **
Sol. Wrong Question
56-58
Sol. By observation
74
r 4Thur
7
==
Page 5
CHANDIGARH NTSE STAGE 1 2019-20
(MENTAL ABILITY TEST)
ANSWER KEYS
1. B 2. D 3. A 4. B 5. C
6. B 7. A 8. D 9. C 10. B
11. C 12. B 13. B 14. D 15. B
16. D 17. C 18. B 19. B 20. C
21. D 22. ** 23. B 24. B 25. B
26. B 27. A 28. C 29. A 30. D
31. B 32. C 33. D 34. D 35. D
36. A 37. B 38. A 39. D 40. B
41. A 42. C 43. D 44. C 45. D
46. D 47. ** 48. B 49. D 50. C
51. A 52. A 53. D 54. B 55. **
56. C 57. C 58. D 59. D 60. C
61. A 62. B 63. B 64. B 65. B
66. C 67. C 68. C 69. C 70. B
71. C 72. C 73. B 74. B 75. D
76. D 77. B 78. D 79. C 80. B
81. C 82. A 83. B 84. D 85. A
86. C 87. A 88. C 89. D 90. C
91. C 92. A 93. A 94. A 95. C
96. D 97. B 98. A 99. B 100. D
** None of the option is correct.
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-2
Solution
1. B
Sol. ×2+1, × 2 + 2, × 2 + 3................
2. D
Sol. difference is 3 + 8 = 11, 4 + 9 = 13, 6+ 2 = 8, 7 + 0 = 7, 7 + 7 = 14
3. A
Sol. 3
2
+ 4 = 13, 4
2
+ 5 = 21, 5
5
+ 6 = 31, 7
2
+ 6 = 55
4. B
Sol. 1
2
, 2
3
, 3
2
, 4
3
, 5
2
, 6
3
, 7
2
, 8
3
5. C
Sol. A + 2 = C + 2 = E + 2 = G + 2 = I
Y – 2 = W – 2 = U – 2 = S – 2 = Q
6. B
Sol. 1
3
+ 1
2
, 2
3
+ 2
2
, 3
3
+ 3
2
and so on
7. A
Sol. (2 × 1) + 1 = 3
(3 × 2) + 2 = 8
(8 × 3) + 3 = 27
(27 × 4) + 4 = 112
8. D
Sol. difference is 1 × 2 = 2, 1 × 4 = 4, 1 × 8 = 8, 2 × 6 = 12, 3 × 8 = 24
9. C
Sol. If we arrange Last four alphabet it will be in sequence.
10. B
Sol. If we rearrange the alphabet it will become HARYANA, CHANDIGARH, RAJASTHAN, PUNJAB so CHANDIGARH
is odd
11. C
Sol. abba/abba/abba/..............
12. B
Sol. aaabbc/aaabbc/..............
13. B
Sol. abc/cab/bca/abc/...............
14. D
Sol. 23541/14532/23541/...............
15. B
Sol. 1022/1022/1022/...............
16. D
Sol. 3
2
+ 2
1
+ 1
1
= 12
5
2
+ 2
1
+ 4
1
= 31
17. C
Sol. (1 × 2) + (2 × 7) + (1 × 7) = 23
(3 × 4) + (4 × 5) + (5 × 3) = 47
18. B
Sol. 2
3
4
2
= 816
3
3
5
2
= 2725
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-3
19. B
Sol. X – 1 = W D – 1 = C
V + 1 = W X + 1 = Y
R + 1 = S K + 1 = L
20. C
Sol. R = 18/2 = 9
P = 16/2 = 8
RP = 98 now interchange the position of 98
21. D
Sol. After multiplying the digit of 23 we get 6
And After multiplying the digit of 24 we get 8
Now if we multiply 6 and 8 we get 48 and so on
22. **
Sol. Wrong Question
23. B
Sol. 6 × 7 = 42
7 × 12 = 84
12 × 13 = 156
24. B
Sol. (7 – 3)
3
, (13 – 7)
3
(13 – 8)
3
= 125
Sol. (25-28) By observation
29. A
Sol. By observation
30. D
Sol. By observation
31. B
Sol. By observation
32. C
Sol. By observation
33. D
Sol. By observation
34. D
Sol. By observation
(35-37)
Sol.
38. A
Sol. 2
2
+ 4
4
+ 5
5
= 3385
39. D
Sol.
3
28 27
79
??
+
??
??
= 343
D
A
E
F
B
G
C
Brown
Blue
yellow
Pink
White
Black
Green
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-4
40. B
Sol. 120 ×
2
11
=
240
11
=
9
21
11
minutes past 4
41. A
Sol. 15 Aug 2047
Complete year = 2046
Odd days
1 to 2000 = 0
46 = 46
11= 11
Jan = 3
Feb = 0
Mar = 3
Apr = 2
May = 3
Jun = 2
July = 2
15 Aug = 1
42. C
Sol. By observation
43. D
Sol. G = 7
I = 9
7
2
+ 9
2
= 130
44. C
Sol. By observation
45. D
Sol. By observation
46. D
Sol. By observation
47. **
Sol. Wrong question
48-51
Sol.
148
874
1022
+
L = 1 , E = 4, T = 8, H = 7, O = 0, S = 2
52. A
Sol. N = 14
T = 20
S = 19
E = 5 If we add all of them we get 58
53. D
Sol. O = 15
M = 13
If we multiply both of them we get 195
54. B
Sol. If we add extreme digits and multiply with middle digit we get 28, 39, 98, 96 and interchange there position to get
82, 93, 89, 69
55. **
Sol. Wrong Question
56-58
Sol. By observation
74
r 4Thur
7
==
ANSWER KEYS_CHANDIGARH_NTSE STAGE 1 2019-20_MAT.DOCX-5
59-62
Sol. By observation
63. B
Sol. By observation
64. B
Sol.
65. B
Sol. By observation
66. C
Sol. There is no G in RECOMENDABLE
67. C
Sol.
68. C
Sol. By observation
69. C
Sol. By observation
70. B
Sol. By observation
71. C
Sol. By observation
72. C
Sol. By observation
73. B
Sol. By observation
74. B
Sol. By observation
75. D
Sol. By observation
76. D
Sol. By observation
77. B
Sol. By observation
78. D
Sol. By observation
House
Park
Office
Market
N
E
S
W
N
E
S
W
4
5
3
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