Quantitative Aptitude Quiz - IX
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1. √2900 × √498 ÷ √251 = ? ÷ 8
(1) 600
(2) 670
(3) 770
(4) 750
(5) 730
2. 89.998% of 598.9 + 51.002% of 899.99 – 171.015 = ?
(1) 990
(2) 830
(3) 910
(4) 870
(5) 980
3. (341/20.002) ÷ (511/30.07) × (179.909/49.919) = ?
(1) 36
(2) 7.2
(3) 72
(4) 3.6
(5) 1.8
4. 8999 ÷ 90.005 × 95.998 = ? × 20.999
(1) 420
(2) 320
(3) 540
(4) 525
(5) 457
5. (39.99)2 – (9.9)2 – (15.1)2 = ?
(1) 1375
(2) 1275
(3) 1100
(4) 1175
(5) 725
Directions (6 – 10): What will come in place of the question-mark (?) in the following questions?
6. (13/18) of 24% of 1023 = 120 + ?
(1) 60
(2) 57
(3) 87
(4) 120
(5) None of these
7. 5322– 8241 + 3642 + 3120 = ? + 1203
(1) 2640
(2) 2569
(3) 1639
(4) 2549
(5) None of these
8. 53 × 25 ÷ √625 – 32 =? – 42
(1) 132
(2) 157
(3) 155
(4) 133
(5) None of these
9. √(58 × 10 + 120 + 29) = (?)2
(1) 27
(2) √27
(3) 272
(4) 729
(5) 725
10. 62 × 362 = 6? × 216
(1) 4
(2) 3
(3) 6
(4) 2
(5) None of these
Directions (11–15): What will come in the place of the question mark (?) in the following number series?
11. 13 16 14 17 15 18 (?)
(1) 16
(2) 15
(3) 14
(4) 21
(5) None of these
12. 25 50 35 70 55 110 95 (?)
(1) 196
(2) 80
(3) 185
(4) 190
(5) None of these
13. 10 14 26 50 90 (?)
(1) 100
(2) 125
(3) 150
(4) 155
(5) None of these
14. 2 8 20 44 92 (?)
(1)189
(2)188
(3) 288
(4) 818
(5) None of these
15. 15 21 33 51 75 (?)
(1) 103
(2) 102
(3) 105
(4) 95
(5) None of these
ANSWERS
1. (1)
Explanations -
? =√2290×√498÷√251×8
≈ 54×22÷16×8
≈600
2. (2)
Explanations -
? = 89.998% of 598.9+51.002% of 899.99 - 171.015
≈90% of 600 + 51% of 900 – 171.05
≈540+459 – 171
≈830
3. (4)
Explanations -
? = (341/20.002) ÷ (511/30.07) * (179.909/49.919) = ?
≈ 340/20 * 30/510 * 180/50
≈ 3.6
4. (5)
Explanations -
? = 8999÷90.005×95.998÷20.999
≈9000÷90×96÷21
≈9600÷21
≈457
5. (2)
Explanations -
? = 39.992 – 9.92 – 14.92
≈ 402 – 102 – 152
≈ 1275
6. (2)
Explanations -
? = (13/18) of 24% of 1203 – 120
= (13/18)*(24/100)*1203-120
= ((13*4*341)/100) – 120
= 177.32 – 120
= 57 (approx)
7. (5)
Explanations -
? = 5322 – 8241 + 3642 +3120 – 1023 = 2820
? = 53 * 25 ÷ √625 – 32 + 42
= 125 * 25 ÷ 25 – 9 + 16
= 125 + 7
= 132
8. (1)
Explanations -
(1) ? = 53 * 25 ÷ √625 – 32 + 42
= 53 * 25 ÷ 25 – 9+16
= 125 + 7
= 132
9. (2)
Explanations -
(?)2 = √(58 * 10 + +29)
√729 = 27
? = √27
10. (2)
Explanations -
6? = (62 × 362)/ 216
6? = (62 × 64)/63
6? = 63
? = 3
11. (1)
Explanations -
13, 16, 14, 17, 15, 18, (16)
+3 -2 +3 -2 +3 -2
12. (4)
Explanations -
25, 50, 35, 70, 55, 110, 95, (190)
×2 -15 ×2 -15 ×2 -15 ×2
13. (3)
Explanations -
10, 14, 26, 50, 90, (150)
+4 +12 +24 +40 +60
+8 +12 +16 +20
14. (2)
Explanations -
2 8 20 44 92 (188)
+6 +12 +24 +48 +96
15. (3)
Explanations -
(3) 15 21 33 51 75 (105)
+6 +12 +18 +24 +30
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