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

1. 124 215 342 511 ? 999
1) 695 
2) 625 
3) 728 
4) 806 
5) 573

2. 516 256 126 61 28.5 ?
1) 12.25 
2) 16.75 
3) 14.25 
4) 20.20 
5) 18.7

3. 7 21 50 109 ? 467
1) 198 
2) 228 
3) 372 
4) 402 
5) 275

4. 18 82 118 134 138 ?
1) 132 
2) 198 
3) 125 
4) 138 
5) 92

5. 5 22 103 406 ? 2422
1) 1516 
2) 1298 
3) 1136 
4) 1602 
5) 1213

Directions (Q. 6-10): What approximate value should come in place of the question mark (?) in the following questions?

6. √5590 / 3√3370 = ?
1) 2 
2) 3 
3) 4 
4) 5 
5) 6

7. [(3525 + 5567 + 9853) ÷ (3132 + 1975 + 2275) × 7 = ?
1) 15 
2) 18 
3) 21 
4) 24 
5) 28

8. √25000 * √3.999 = ?
1) 308 
2) 312 
3) 314 
4) 316 
5) 318

9. [4/5 * (2/7 * 5/3 / 7/9) of 347 = ?
1) 168 
2) 170 
3) 175 
4) 180 
5) 185

10. (13.98)^2 + 272% of 75 = ?
1) 360 
2) 380 
3) 400 
4) 420 
5) 440

Answers:
1. 3
The series is
5^3 – 1 = 124
6^3 – 1 = 215
7^3 – 1 = 342
8^3 – 1 = 511
9^3 – 1 = 728
10^3 – 1 = 999
Reqd answer = 728

2. 1
The series is

3. 2
The series is

4. 4
The series is

5. 5
The series is

6. 4
√5599 / 3√3370 = ?
75 ÷ 15 = ?
? = 5

7. 2
(3525 + 5567 + 9853) ÷ (3132 + 1975 + 2275) × 7 = ?
18945 ÷ 7382 × 7
2.57 × 7 = 17.99  18

8. 4
√25000 * √3.999 = 4
158 × 2 = 316

9. 2
[4/5 * (2/7 * 5/3) / 7/9] of 347 =4/5 * 10/21 * 9/7 * 347 = ?

10. 3
(13.98)^2 + 272% of 75 = ?
196 + 272 * 3/4 = ?
196 + 204 = ?
? = 400