Showing Mcqs of math -- (543)

Which of the following fraction is least? 

1/10

2/21

4/39

12/119

1/ (10)^22- 1 (10)^23=?

9/10^23

-1/10

1/10

8/10^22

(510)^2 (490)^2=?

1000

5000

10000

20000

A walks 5 miles in 1 1/2 hours, and 'B' walks 440 yards in 5 minutes. Find the ratio of their speed:

2:3

10:9

6:7

8:9

If n is integer, which of the followings must be even: 2m, 2n+n, 2nxn:

3 only

1 only

1 and 2 only

1 and 3 only

Which of the following represents the product of two consecutive integers?

n^2+n

n^2

n+1

n

A group of 15 students took a test that was scored from 0 to 100. If exactly ten students scored 75 or more in the test, what is the lowest possible value for average of the scores of all 15 students:

30

40

50

60

if (2+3)(1+x)=25 Then x:

4

5

6

7

If mangoes be bought at the rate of 14 for a rupee. How many must be sold for a rupee to gain 40 per cent profit 

40

30

20

10

If 2x+y=8 And : x-y-1 Then x=?

6

9

3

15