Quantitative Aptitude Quiz – 77 (Simplification)

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. 675.456 + 12.492 * 55.671 = ?
a) 971
b) 1071
c) 1171
d) 1371
e) None of these

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Answer d) 1371
Explanation:
? = 675.456 + 12.492 * 55.671 = 675.456 + 695.442 = 1371(Approx.)

2. 4374562 * 64 = ? * 7777
a) 360
b) 3600
c) 36000
d) 360000
e) None of these

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Answer c) 36000
Explanation:
? = (4374562*64)/7777 = 36000(Approx.)

3. (4576 + 3286 + 5639) / (712 + 415 + 212) = ?
a) 10
b) 18
c) 22
d) 34
e) None of these

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Answer a) 10
Explanation:
? = (4576+3286+5639)/(712+415+212) = 13501/1339 = 10(Approx.)

4. (872% of 659) / 543 = ?
a) 17
b) 11
c) 21
d) 27
e) None of these

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Answer b) 11
Explanation:
? = (659 * 872/100) / 543 = 5746.48/543 = 10.582 = 11(Approx.)

5. 1875 / 35 * 3242 / 48 = ?
a) 3525
b) 3618
c) 3641
d) 3591
e) None of these

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Answer b) 3618
Explanation:
? = 1875 / 35 * 3242 / 48 = 1875/35 * 3242/48 = 3618(Approx.)

Directions-(Q.5 – 10) What should come in place of question mark (?) in the following questions ?

6. 414 * ? * 7 = 127512
a) 36
b) 40
c) 44
d) 48
e) None of these

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Answer c) 44
Explanation:
414 * ? * 7 = 127512
=>? = 127512/414*7 = 44.

7. 8888 + 848 + 88 – ? = 7337 + 737
a) 1750
b) 1650
c) 1550
d) 1450
e) None of these

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Answer a) 1750
Explanation:
(8888 + 848 + 88) – ? = 7337 + 737
=>9824 – ? = 8074
=>? = 9824 – 8074 = 1750.

8. 74 + 12 * 0.75 – 6 = ?
a) 72
b) 67
c) 62
d) 77
e) None of these

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Answer d) 77
Explanation:
? = 74 + 12 * 0.75 – 6 = 74 + 9 – 6 = 77.

9. 515.15 – 15.51 – 1.51 – 5.11 – 1.11 = ?
a) 491.91
b) 419.91
c) 499.19
d) 411.19
e) None of these

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Answer a) 491.91
Explanation:
515.15 – 15.51 – 1.51 – 5.11 – 1.11
= 515.15 – 23.24 = 491.91.

10. {(84)^2 / 28 * 12} / 24 = 7 * ?
a) 15
b) 18
c) 17
d) 19
e) None of these

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Answer b) 18
Explanation:
7 * ? = {(84)^2 / 28 * 12} / 24
= {7056/28 * 12} / 24 = 3024/24
=>? = 3024 / 24*7 = 18.

Directions-(Q.11 – 15) What should come in place of the question mark (?) in the following number series ?

11. 354,   180,   64,   21,   10.2,   ?
a) 5.6
b) 8.7
c) 3.8
d) 1.7
e) None of these

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Answer b) 8.7
Explanation:
354/2 + 3 = 180
180/3 + 4 = 64
64/4 + 5 = 21
21/5 + 6 = 10.2
10.2/6 + 7 = 8.7.

12. 4.5,   18,   2.25,   ?,   1.6875,   33.75
a) 27
b) 25.5
c) 36
d) 40
e) None of these

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Answer a) 27
Explanation:
Alternate series..
4.5 * 1/2 = 2.25
18 * 3/2 = 27
2.25 * 4/3 = 1.6875
27 * 5/4 = 33.75.

13. 59.76,   58.66,   56.46,   52.06,   ?,   25.66
a) 48.08
b) 46.53
c) 43.46
d) 43.26
e) None of these

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Answer d) 43.26
Explanation:
59.76 – 1.1 = 58.66
58.66 – 2.2 = 56.46
56.46 – 4.4 = 52.06
52.06 – 8.8 = 43.26
43.26 – 17.6 = 25.55.

14. 36,   157,   301,   470,   ?,   891
a) 646
b) 695
c) 666
d) 669
e) None of these

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Answer c) 666
Explanation:
36 + (11)^2 = 157
157 + (12)^2 = 301
301 + (13)^2 = 470
470 + (14)^2 = 666
666 + (15)^2 = 891.

15. 14,   70,   350,   ?,   8750,   43750
a) 1570
b) 1750
c) 875
d) 785
e) None of these

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Answer b) 1750
Explanation:
Each number * 5 = next number.

Best Wishes,
D2G’s Team..


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