Aptitude Questions (Simplification) for AAO/SO Exams

Aptitude Questions (Simplifications) for Upcoming AAO/SO Exams Set-8:
Dear Readers, Important Practice Aptitude Questions for Upcoming AAO/SO Exams was given here with Solutions. Aspirants those who are preparing for the examination can use this.

Directions ( Q. 1 -5): What Value should come in place of question mark (?) in the following questions?

1). (3 / 5)  of  (2 / 7)  of  (35 / 18) of ? = 405
a)    1375
b)    1275
c)    1285
d)    1215
e)    1325

2). 24 % of 6550 – 175 % of ? = 697
a)    500
b)    475
c)    675
d)    825
e)    975

3). (1/7)  of  254  of  (1/8)  =  ? ÷ 21
a)    96(1 / 4)
b)    95(1 / 7)
c)    98(2 / 7)
d)    96 (3 / 7)
e)    95(1 / 4)

4). (2892 ÷12) × 13 = ? % of 2410
a)    241
b)    342
c)    230
d)    130
e)    150

5). [(√(81 × 64) / (4.5)] × 18 = (?)2 – 153
a)    21
b)    23
c)    17
d)    19
e)    22

Directions (Q. 6 -10): What approximate value should come in place of question mark (?)  in the following questions ? (Note: you are not expected to calculate the exact value.)

6). 799.99 ÷ 12.492 = ? – 323.469
a)    380
b)    382
c)    388
d)    378
e)    372
7). (√728.68 ÷ 2.7) + 224 = (18)?
a)    2
b)    – 2
c)    4
d)    – 5
e)    – 4

8). (4429 ÷ 44.3) × 18.75 – 289.59 = ?
a)    1485
b)    1585
c)    1425
d)    1685
e)    1365

9). (1 / 8) of 2768 + 2835.42 = ? –  297
a)    3528
b)    3478
c)    3472
d)    3078
e)    3178

10). 238.49 + 69 % of 791.213 = (?)2
a)    27
b)    28
c)    30
d)    31
e)    29

Answers:                         
1). d) 2). a) 3). e) 4). d) 5). a) 6). c) 7). a) 8). b) 9). b) 10). b)

Detailed Explanation:

1. (3 / 5) × (2 / 7) × (35 / 18) × ? = 405
Or, ? = [(405 × 5 × 7 ×18) / (3 × 2 × 35)] = 1215
Answer: d)

2. 24 % of 6550 – 175 % of  ? = 697
Or, [(24 × 6550) / 100 ] – [175 × ?/ 100] = 697 
or, [(1572 – 697) × 100] / 175 = ?
:. ? = (87500 / 175) = 500
Answer: a)

3. 254 × (1 / 7) × (1 / 8) = ? ÷ 21
Or, ? = [(254 × 21) / 56] = 95 (1 / 4)
 Answer: e)

4.  [(? × 2410) / 100] = (2892 ÷ 12 ) × 13
= 241 × 13 = 3133
:.? = [(3133 × 1000) / 2410] = 130
Answer: d)

5. [(√(81 × 64) ÷ (4.5))] × 18 = (?)2 – 153
Or, (9 × 8 ÷ 4.5) × 18 = (?)2  – 153
Or, 16 × 18 + 153 = (?)2
:. ? = √(288 + 153) = √441 = 21
Answer: a)

6. ? – 323.5 ≈ 800 ÷ 12.5
Or, ?  ≈ 64 + 323.5 = 387.5 ≈ 388
Answer: c)

7. (18) ≈ (27 ÷ 2.7)2 + 224
=100 + 224 = 324 ≈ (18)2
Or, (18)? ≈ 182
:. ? ≈ 2
Answer: a)

8. ? ≈ (4430 ÷ 44. 3) × 18.75 – 290
=100 × 18.75 – 290
= 1875 – 290 = 1585
Answer: b)

9. ? – 297 = (1/8) × 2768 + 2835.42
≈ 346 + 2835 = 3181
:. ? = 3181 + 297 = 3478
Answer: b)

10. (?)2 ≈ 69 % of 791 + 238.5
= [(69 * 791) / 100] + 238.5
= 546 + 238.5 = 784.5 ≈ 784
:. ? = √784 = 28
Answer: b)


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