Jaikishen can do a piece of work in 15 hours. If he is joined by Jhanvi who is 50% more efficient, in what time will they together finish the work?
1). 6 hours
2). 12 hours
3). 3 hours
4). 9 hours
Select the related word/letters/number from the given alternatives.
81 : 121 : : 49 : ?
1). 81
2). 62
3). 52
4). 100
If a- b= 6 and ab =16, then $a^{3}-b^{3} $is
1). 504
2). 702
3). 728
4). 511
If cos 135° = x, then the value of x is
1). -1/√2
2). -√3/2
3). -1/2
4). 2
When a discount of 50% is given on a shirt, the profit is 25%. If the discount is 10%, then the profit is
1). 35 percent
2). 55 percent
3). 215 percent
4). 125 percent