Directions (Q. 1-5): What approximate value should come in place of question mark (?) in the following questions (?) (you are not expected to calculate the exact value).
1). 180% of 25501 + 50% of 28999 – 7634.97 = ?
a) 56870
b) 52770
c) 57720
d) 53875
e) 57270
2). 174.995 × 14.995 ÷ 25 + ? + 86.93 × 3.004 = 495
a) 220
b) 180
c) 105
d) 340
3). 140% of 56 + 56% of 140.003 - √2026 - ? = 40
a) 40
b) 220
c) 70
d) 330
e) 180
4). 5687.285 + 4872.35 ÷ 12 × 6.989 = 5 × (3699.98 - ?)
a) 1740
b) 2096
c) 1910
d) 1860
e) 2000
5). 1325√17 + 20% of ? – 83.99 of (3/4) = 5500
a) 520
b) 1280
c) 1320
d) 680
e) None of these
Directions (Q. 6-10): what will come in place of question mark (?) in the given number series?
6). 4, 11, 24, 44, 72, ?
a) 121
b) 113
c) 109
d) 118
e) 105
7). 13, 21, 37, 69, ? 261
a) 133
b) 125
c) 141
d) 139
e) None of these
8). 17, 25, 15, 27, 13, ?
a) 29
b) 31
c) 27
d) 35
e) 33
9). 11, 12, 20, 29, 93, ?
a) 104
b) 116
c) 108
d) 120
e) 118
10). 11, 12, 26, 81, 328, ?
a) 1720
b) 1645
c) 1540
d) 1625
e) 1575
Solution With Answer Key:
1). B) ? = (180/100) × 25501 + (50/100) × 28999 – 7634.97
= (9/5) × 25500 + (1/2)× 29000 – 7635
= 9 × 5100 + 14500 – 7635 = 60400 – 7635 = 52765 = 52770
2). E) 174.995 × 14.995 ÷ 25 + ? + 86.93 × 3.004 = 495
or, 175 × 15 ÷ 25 + ? + 87 × 3 = 495
or, 105+?+261 = 495
or, ? = 495 – 366 = 129 = 130
3). C)140% of 56 + 56% of 140 - √2026 - ? = 40
or, (56 + 56)% of 140 - √2026 - ? = 40
or, 112% of 140 – 45 - ? = 40
or, ? = 1.12 × 140 – 45 – 40 = 156.80 – 85
or, ? = 157 – 85 = 72 = 70
4).E) 5687.285 + 4872.35 ÷ 12 × 6.989
=5 × (3699.98 - ?)
Or, 5687 + 4872/12 × 7 = 5 × (3700 - ?)
Or, 5687 + 406 × 7 = 18500 – 5 × ?
Or, ? = 18500-5687-2842/5 = 9971/5
=1994.2 = 2000
5).A) 1325 × √17 + 20% of ? – 83.99 × ¾
=5500
Or, 1325 × 4.12 + ? × 1/5 – 84 × ¾ = 5500
Or,5459 + ?/5 – 63 = 5500
Or, ?/5 = 5500 + 63 – 5459 = 5563 – 5459 =104
? = 104 × 5 = 520
6). C) The series is
4 + (7) = 11 + (13) = 24 + (20) = 44 + (28) = 72 + (37) = 109
7 + (6) = 13 + (7) = 20 + (8) = 28 + (9) = 37
7). A) The series is +8,+16,+32,+64,+128,…
ie 13 + 8 = 21, 21 + 16 = 37, 37+32 = 69, 69+64 = 133,133+128 = 261
8). A) The series is +8,+16,+32,+64,+128,…
ie 17 + 8 = 25,25 -10 = 15, 15 + 12 = 27, 27 – 14 = 13,
? = 13 + 16 =29
9).E) The series is +12,+23,+32,+43,+52,+63…..
ie 11 + 1 = 12, 12 + 8 = 20, 20 + 9 = 29, 29 + 64 = 9333, ……
? = 93 + 25 =118
10).B) The series is ×1 + 1, ×2 + 2, ×3 + 3, ×4 + 4, ×5 + 5, …..
ie 11 × 1 + 1 = 12,12 × 2 + 2 = 26,26 × 3 + 3=81, 81 × 4 + 4 =328, ….
? = 328 × 5 + 5 = 1640 + 5 =1645