Directions (Q.1-5): What should come in place of the questions mark(?) in the following questions?
1. 78921 – 12013 – 156 + 9723 =?
a) 76315
b) 76475
c) 76515
d) 76585
e) None of these
Click here to View Answer
Answer b) 76475.
2. 3/7 of 5/11 of 4/5 of 10395=?
a) 1560
b) 1575
c) 1620
d) 1590
e) None of these
Click here to View Answer
Answer c) 1620
Explanation:
? = (3 * 5 * 4 * 10395) / (7 * 11 * 5) = 1650.
3. 126 / 7 / 0.6 =?
a) 3
b) 300
c) 18
d) 30
e) None of these
Click here to View Answer
Answer d) 30
Explanation:
? = (126/7) / 0.6 = 18 / 0.6 = 30.
4. (3)^7.2 * (9)^2.4 / (27)^5 = (3)^?
a) -3
b) -0.2
c) 9.8
d) 2
e) None of these
Click here to View Answer
Answer a) -3
Explanation:
? = (3)^7.2 * (3^2)^2.4 / (3^3)^5 = 3^7.2 * 3^4.8 / 3^15
= 3^7.2+4.8-15 = 3^-3.
5. 80% of 135 + ?% of 750 = 228
a) 25
b) 20
c) 16
d) 24
e) None of these
Click here to View Answer
Answer c) 16
Explanation:
0.8 of 135 + X of 15/2 = 228
=>X of 15/2 = 228 – 108
=>X = 120 * 2 / 15 = 16.
6. 20 * 168 / 4 – 40 = ? + 110
a) 90
b) 80
c) 200
d) 240
e) None of these
Click here to View Answer
Answer a) 90
Explanation:
20 * 168/14 – 40 = 20 * 12 – 40 = 240 -40 =200
? = 200 – 110 = 90.
7. 4 * 5^2 – 3^2 * 7 + 6^2 = ? +24
a) 8^2
b) 9^2
c) 4^2
d) 7^2
e) None of these
Click here to View Answer
Answer d) 7^2
Explanation:
? = 4*25 – 9*7 + 36 – 24
=>? = 100 + 36 – 87 = 49 = 7^2.
8. (2222.5 – 1680 * 0.75) * 1.2 =?
a) 1015
b) 1115
c) 1155
d) 1555
e) None of these
Click here to View Answer
Answer c) 1155
Explanation:
? = (2222.5 – 1260) * 1.2 = 962.5 * 1.2 = 1155.
9. 0.75% of 90 + 0.55% of 80 =?
a) 1.725
b) 1.475
c) 1.325
d) 1.115
e) None of these
Click here to View Answer
Answer d) 1.115
Explanation:
(0.75*90)/100 + (0.55*80)/100 = 0.675 + 0.44 = 1.115.
10. 2/7 of 5/6 of ? = 200
a) 480
b) 420
c) 840
d) 729
e) None of these
Click here to View Answer
Answer c) 840
Explanation:
? = 200 * 7/2 * 6/5 = 840.
Directions (Q.11-15): In each of the following number series, a wrong number is given. Find out the wrong number.
11. -6 -5 3 28 94 219 435
a) -5
b) 3
c) 28
d) 94
e) 219
Click here to View Answer
Answer c) 28
Explanation:
The series is +1^3, +2^3, +3^3, +4^3 …
Hence, 28 is wrong. It should be 30.
12. -1 0 2 21 340 8510
a) 0
b) 2
c) 21
d) 340
e) 8510
Click here to View Answer
Answer e) 8510
Explanation:
The series is *1^2 + 1, *2^2 + 2, *3^2 + 3, …
Hence, 8510 is wrong. It should be 8505.
13. 24 12 12 18 27 90 270
a) 27
b) 90
c) 18
d) 12
e) 270
Click here to View Answer
Answer a) 27
The series is *1/2, *1, *3/2, *2, *5/2…
Hence, 27 is wrong. It should be 36.
14. 6 7 13 20 33 53 96
a) 20
b) 33
c) 53
d) 96
e) 13
Click here to View Answer
Answer d) 96
Explanation:
Here, 1st+2nd = 3rd no, 2nd+3rd = 4th no, 3rd+4th = 5th no …
Hence, 96 is wrong. It should be 33 + 53 = 86.
15. 144 72 48 36 28 24
a) 24
b) 28
c) 36
d) 48
e) 72
Click here to View Answer
Answer b) 28
Explanation:
The series is *1/2, *2/3, *3/4, *4/5…
Hence, 28 is wrong. It should be 36*4/5 = 28.8.
Best Wishes,
D2G’s Team..
