36 .
The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is:
A.20
B. 23
C. 169
D.None of these
View AnswerAns: 23
37 .
The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries?
A.3 : 3 : 10
B. 10 : 11 : 20
C. 23 : 33 : 60
D.Cannot be determined
View AnswerAns: 23 : 33 : 60
38 .
A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?
A.230 m
B. 240 m
C. 260 m
D.270 m
View AnswerAns: 270 m
39 .
An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:
A.2%
B. 2.02%
C. 4%
D.4.04%
View AnswerAns: 4.04%
40 .
In how many different ways can the letters of the word [DETAIL] be arranged in such a way that the vowels occupy only the odd positions?