A car travels a certain distance taking 7 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 5 hrs.What is the distance travelled
210 kms
30 kms
20 kms
None of these
If 2x-y=4 then 6x-3y=?
15
12
18
10
16,33,65,131,261,?
523
521
613
721
7,26,63,124,215,342,?
481
511
391
421
9,12,11,14,13,?,15
16
17
10,5,13,10,16,20,19,?
22
40
38
23
8,24,12,36,18,54,?
27
108
68
72
An elegant way of multiplying numbers. 21 x 23 = ?
463
473
483
493
Multiplying a number by 11. 26 x 11 = ?
276
278
274
282
Method for diving by 9. 43 / 9 = Remainder ?
8
5
6
7