Direction (Q.1-5) :What should come at the place of question mark (?) in the following number series?
Q.1 4, 9, 17, ?, 69, 139
A. 62
B. 10
C. 35
D. 87
E. None of these
Q.2 16, 9, 11, 26, ?, 912
A. 123
B. 106
C. 165
E. None of these
Q.3 15, 18, 26, 41, 65, ?
A. 100
B. 100
C. 163
D. 195
E. None of these
Q.4 3, 6, ?, 72, 360, 2160
A. 60
B. 18
C. 24
D. 37
E. None of these
Q.5 32, 48, 72, 108, ?, 243
A. 162
B. 125
C. 145
D. 163
E. None of these
Direction (Q.6-10) :What should come at the place of question mark (?) in the following questions?(Don't calculate exact value)
Q.6 ?% of 650+130÷(√729.02+∛4912.9) = 25.98
A. 195
B. 35
C. 156
D. 89
E. None of these
Q.7 (3466.024+641.7-423.97) = ?²-20% of 744.9-√120.97
A. 20
B. 3
C. 40
D. 62
E. None of these
Q.8 √1444.02×√575÷11.98÷√361+262 = ?²+√100.01
A. 9
B. 12
C. 55
D. 56
E. 16
Q.9 ?×√1090÷125.97 = ∛1330÷?×441÷41.9÷∛343
A. 3
B. √7
C. 3√7
D. 25
E. 6.25
Q.10 √1295.9×19-√360×∛4096.04 = ?
A. 2√95
B. 55
C. √5
D. 4
E. None of these.
Answers:
1. C.
2. D.
3. B.
4. B.
5. A.
6. C.
7. D.
8. E.
9. C.
10. A.
Explanation:
1. 4, 9, 17, ?, 69, 139
4×2+1 = 99×2-1 = 17
17×2+1 = 35
35×2-1 = 69
69×2+1 = 139
2. 16, 9, 11, 26, ?, 912
16×.5+1 = 99×1+2 = 11
11×2+4 = 26
26×4+8 = 112
112×.5+1 = 912
3. 15, 18, 26, 41, 65, ?
15+(2²-1) = 18
18+(3²-1) = 26
26+(4²-1) = 41
41+(5²-1) = 65
65+(6²-1) = 100
15+(2²-1) = 18
18+(3²-1) = 26
26+(4²-1) = 41
41+(5²-1) = 65
65+(6²-1) = 100
4. 3, 6, ?, 72, 360, 2160
3×2 = 6
6×3 = 18
18×4 = 72
72×5 = 360
360×6 = 2160
3×2 = 6
6×3 = 18
18×4 = 72
72×5 = 360
360×6 = 2160
5. 32, 48, 72, 108, ?, 243
32×1.5 = 48
48×1.5 = 72
72×1.5 = 108
108×1.5 = 162
162×1.5 = 243
48×1.5 = 72
72×1.5 = 108
108×1.5 = 162
162×1.5 = 243
6. ?% of 650+130÷(√729.02+∛4912.9) = 25.98
?×6.5+130 = 26×(27+17)
?×6.5+130 = 26×44
?×6.5 = 26×44-130
?×6.5 = 1144-130
?×6.5 = 1014
? = 156
?×6.5+130 = 26×(27+17)
?×6.5+130 = 26×44
?×6.5 = 26×44-130
?×6.5 = 1144-130
?×6.5 = 1014
? = 156
7. (3466.024+641.7-423.97) = ?²-20% of 744.9-√120.97
3466+642-424 = ?²-20% of 745-√121
4108-424 = ?²-149-11
3684 = ?²-160
?² = 3684+160
?² = 3744
? = 62
3466+642-424 = ?²-20% of 745-√121
4108-424 = ?²-149-11
3684 = ?²-160
?² = 3684+160
?² = 3744
? = 62
8. √1444.02×√575÷11.98÷√361+262 = ?²+√100.01
38×24÷12÷19+262 = ?²+10
4+262 = ?²+10
?² = 4+262-10
?² = 256
? = 16
9. ?×√1090÷125.97 = ∛1330÷?×441÷41.9÷∛343
38×24÷12÷19+262 = ?²+10
4+262 = ?²+10
?² = 4+262-10
?² = 256
? = 16
9. ?×√1090÷125.97 = ∛1330÷?×441÷41.9÷∛343
?×√1089÷126 = ∛1331÷?×441÷42÷∛343
?×33÷126 = 11÷?×441÷42÷7
?×? = 11÷33×441÷42÷7×126
?² = 63
? = 3√7
?×33÷126 = 11÷?×441÷42÷7
?×? = 11÷33×441÷42÷7×126
?² = 63
? = 3√7
10. √1295.9×19-√360×∛4096.04 = ?
√1296×19-√361×∛4096 = ?
36×19-19×16 = ?
? = 19(36-16)
? = 19×20
? = 2√95
√1296×19-√361×∛4096 = ?
36×19-19×16 = ?
? = 19(36-16)
? = 19×20
? = 2√95
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