#### Test of Reasoning - Hidden Equations

##### Click on the option you think is right and then check by clicking on the Show Answer button. You can change your option as many times as you like.

1. If 12 x 7 = 408 and 9 x 8 = 207 then 13 x 7 = ?

1. 190
2. 91
3. 901
4. 109

2. a = 11 (242) 121 ; b = 14 (392) 196 ; c = 13 (?) 169

1. 182
2. 338
3. 2197
4. 28224

3. 323 x 41 = 14323, 137 x 72 = 27731, 48 x 87 = 7884, 34 x 75 = ?

1. 2550
2. 5743
3. 7534
4. 4357

4. 11 x 12 x 13 = 234, 24 x 23 x 35 = 658, 31 x 43 x 54 = ?

1. 497
2. 974
3. 749
4. 479

5. 16 (210) 14, 14 (156) 12, 12 (?) 10

1. 110
2. 100
3. 120
4. 90

6. A = 3(21)247, B = 5(-)407, C = 7(49)567

1. 28
2. 25
3. 35
4. 38

7. 7 x 5 x 4 = 57354, 8 x 7 x 3 = 78563, then 6 x 8 x 5 = ?

1. 86585
2. 86855
3. 68485
4. 86485

8. If 14 x 13 = 128 and 16 x 13 = 280 then 15 x 11 = ?

1. 516
2. 156
3. 165
4. 615

9. If 264 * 2 = 6, 870 * 3 = 5, then what should be 735 * 5 be equal to

1. 3
2. 5
3. 12
4. 16

10. A = 51 (714) 14; B = 61 (915) 15; C = 71 (1136) 16; D = 81 (?) 17

1. 1377
2. 1378
3. 1356
4. 1346

11. If 10 – 3 = 12, 12 – 4 = 13, 14 – 5 = 14, what is 16 – 6 ?

1. 10
2. 15
3. 16
4. 18

12. If 1 + 4 = 9, 2 + 8 = 18, 3 + 6 = 15, then 7 + 8 = ?

1. 23
2. 30
3. 32
4. 41

13. If 123 = 14 and 323 = 22, then 624 = ?

1. 60
2. 72
3. 56
4. 55

14. If 324 x 289 = 35, 441 x 484 = 43, 625 x 400 = 45, find the value of 256 x 729.

1. 33
2. 35
3. 43
4. 34

15. If 94 + 16 = 42, 89 + 23 = 78, then 63 + 45 = ?

1. 18
2. 28
3. 38
4. 48

16. If 9 * 7 = 32, 13 * 7 = 120, 17 * 9 = 208, then 19 * 11 = ?

1. 150
2. 180
3. 210
4. 240

17. If 8 + 8 = 72, 5 + 5 = 30 and 7 + 7 = 56, what is 6 + 6 = ?

1. 40
2. 42
3. 30
4. 36

18. 7, 2 = 59; 5, 3 = 28; 9, 1 = 810; 2, 1 = 13; 5, 4 = ?

1. 19
2. 9
3. 20
4. 239

19. If 8 x 2 = 61 : 8 x 5 = 04, what is 8 x 10 = ?

1. 80
2. 08
3. 81
4. 18

20. 27(18)3; 216(180)6; 729(?)9

1. 810
2. 700
3. 81
4. 648