C DOT: Numerical Aptitude Questions (Paper 11 of 12)
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If the Sun of two numbers be multiplied by each number separately, the product so obtained are 247 and 114. The sun of the numbers is

19

20

21

23


If x * y = (x + 3) 2 (y 1), then the value of 5 * 4 is

192

182

180

172


A and B can complete a piece of work in 8 days, B and C can do it in 12 days, C and A can do it in 8 days. A, B and C together can complete it in

4 days

5 days

6 days

7 days


A river 3 m deep and 40 m wide is following at the rate of 2 km per hour. How much water (in litres) will fall into the sea in a minute?

4, 00, 000

40, 00, 000

40, 000

4, 000


The L. C. M. Of three different numbers is 120. Which of the following cannot he their H. C. F.

8

12

24

35


A number when divided by 49 leaves 32 as remainder. This number when divided by 7 will have the remainder as

4

3

2

5


In an examination a student scores 4 marks for every correct answer and loses 1 markfor every wrong answer. If he attempts all 75 questions and secures 125 marks, the number of questions he attempts correctly is

35

40

42

46


Among three numbers, the first is twice the second and thrice and third. If the average of the three numbers is 49.5, then the difference between the first and the third number is

54

28

39.5

41.5


The mean of 50 numbers is 30. Later it was discovered that two entries were wrongly entered as 82 and 13 instead of 28 and 31. Find the correct mean.

36.12

30.66

29.28

38.21


The perimeter of a triangle is 40 cm and its area is 60 cm2. If the largest side measures 17 cm, then the length (in cm) of the smallest side of the triangle is

4

6

8

15
