Here in Scoring Part we are providing 10 Questions in simplification, 10 Questions in Approximation, 5 Questions in number Series and 5 Questions in Quadratic Equations, total 30 questions in 20 Minutes. By practicing these questions regularly you can increase you calculation speed and it will help you to increase you score.
Direction (110): What value should come in place of question mark (?) in the following questions?
1.(12)^(3/2) × (12)^(5/2) × (144)^(3/2) ÷ (12)^? = 1728
Or, 4^[(3/2+5/2)] × 3^[(3/2+5/2)] × 4^3 × 3^3 / 1728 = 12^?
Or, 4^4 × 3^4 × 4^3 × 3^3 / 1728 =12^?
Or, (64×27) × 4 × 3 × 4^3 × 3^3 / 1728=12^?
Or, 4^4×3^4=12^?
Or, (12)^4=12^?
?=4
Answer: E
2. 22% of 44% of 66% of 275000=?
= (275 × 22 × 44 × 66)/(10 × 100)
? = 17569.2
Answer: D
3. 5.2% of 39004.8% of 3400=?.
= [(5.2 × 3900) / 100] – [(4.8 × 3400)/100]
= (5.2×39)  (4.8×34)
= 202.8163.2
? = 39.6
Answer: A
4. (24389÷2.9)×7.5=?
= (24389/29 ×10) × 7.5
= 841 × 10 × 7.5
? = 63075
Answer: C
5. 16% of 80+?% of 44=34.8
Or, ? × 44/100 = 34.8 12.8 = 22
Or, ? = (22×100)/44 = 50
Answer: B
6. 73% of 180+23% of 640.5=?
= 131.4+147.315 = 278.715
Answer: C
7. 139.99148.39+25.66+31.396=?
= 197.046  148.39
? = 48.656
Answer: B
8. (19% of 361)÷1.9=?
= (19×19)/10 = 36.1
Answer: C
9. 58% of ?=6728.
Answer: C
10. (∛12167) × (∛274625) × (∛250047)=?.
= 23 × 65 × 63 = 94185
Answer: D
Direction (1120): What approximate value should come in place of question mark (?)in the following questions?
11. 816.21÷34.97×24.98 =?
= 23 × 25
= 575 ≈ 580
Answer: D
12. √(1680) + 3√(4095) =?
≈ 41+16 = 57
Answer: E
13. 22 × (1/3)% of 435.3(11/7)% of 1734.67 =?
≈ (9727) = 70 ≈ 69
Answer: B
14. (803.71)^2 =?
Answer: C
15. (4721+3271+5324)÷(491+769+132)=?.
=13316 ÷ 1392 ≈ 13400 ÷1400
= 9.5 ≈ 10
Answer: D
16. 899.99÷45.012 = ?  224.448
Or, ? = 900 ÷ 45 + 224
= 20 + 224 = 244 = 245 (approx.)
Answer: D
17. 3/5 of 7/19 if 15/28 of 543= ?.
= (63 × 543)/(19 × 28) = 64.30 = 64 (approx)
Answer: E
18. 423.62269.21÷(11.9% of 78)=?.
424 – 270 ÷ (78 × 12)/100
= 424 – 270 ÷ 9
= 424 – 30 = 394 ≈ 395 (approx)
Answer: D
19. 17.99^214.05^2 + (2343.75+81.55)÷?=229
Or, (18)2  (14)^2 + (2344 + 82) ÷ ? = 229
Or, 324 196 + 2426 ÷ ? = 229
Or, 2426/? = 229 – 128 = 101
Or, ? = 2426/101 = 24 (approx)
Answer: C
20. 12.95×7.05+(85.01)^2×10.99=?.
≈13 × 7 + (85)^2 × 11
= 91 + 7225 × 11 (12.95 is approx. taken as 13)
= 91 + 79475 = 79566
Answer: C
Direction (21 – 25): What value should come in place of the question mark (?) in the following number series?
21. 122, 62, 32, ?, 9.5, 5.75
122 ÷ 2 + 1 = 62,
62 ÷ 2 + 1 = 32,
32 ÷ 2 + 1 = 17, etc
Answer: C
22. 1, 1, 2, 8, 64, ?, 32768
Answer: A
23.67, 81, 87, 162, 504, 1992, 9990, ?.
Answer: D
24. 49, 72, 118, ?, 394, 762, 1498.
Answer: C
25. 40,326, ? ,29418, 323607
40 x 8 + 6 = 326
326 x 9 + 7 = 2941
2941 x 10 + 8 = 29418
29418 x 11 + 9 = 323607
Answer: B
Direction (2630): In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and given answer:
26.I. x² − 6x = 7
II. 2y² + 13y + 15 = 0.
x(x7)+(x7)=0
→ x=7,1
2y² + 13y + 15 = 0
2y(y+5)+3(y+5)=0
→y=5, 3/2
i.e x> y
Answer: B
27. I. 3x² − 7x + 2 = 0
II. 2y² − 11x + 15 = 0.
3x(x2)+(x2)=0
→x=2,1/3
2y² − 11x + 15 = 0
2y(y3)5(y3)=0
→y=3,5/2
i.e x
28. I. 10X² − 7x + 1 = 0
II. 35y² − 12y + 1 = 0
5x (2x1)(2x1)=0
→x=1/2, 1/5
35y² − 12y + 1 = 0
7y (5y1)(5y1)=0
→y=1/7,1/5
i.e x ≥ y
Answer: D
29. I. 4x² = 25
II. 2y² − 13y + 21 = 0.
→X=5/2, 5/2
2y² − 13y + 21 = 0
2y(y3)7(y3)=0
→y=3,7/2
i.e x< y
Answer: A
30. I. 3x² + 7x = 6
II. 6(2y² + 1) = 17y
3x(x+3)2(x+3)=0
→x= 2/3,3
10y² – 7y + 1 = 0
5y(2y1)(2y1)=0
→y=1/2, 1/5
i.e relation cannot be established
Answer: C
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