Problems On Numbers

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1 A number is 25 more than it's two-third. Find the number:

A
100
B
50
C
75
D
120

2 The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest numbers?

A
75
B
77
C
76
D
73

3 The sum of two numbers is 10. Their product is 20. Find the sum of the reciprocals of the two numbers:

A
3/2
B
$$\frac{1}{2}$$
C
$$\frac{2}{3}$$
D
4/5

4 Three numbers are in the ratio 4 : 5 : 6 and their average is 25. The largest number is :

A
30
B
40
C
50
D
60

5 A certain number of two digit's is three times the sum of it's digit's and if 45 be added to it, the digit's are reversed. The number is ?

A
23
B
27
C
32
D
72

6 The sum of five consecutive odd numbers is equal to 175. What is the sum of the second largest number and the square of the smallest number amongst them together?

A
989
B
997
C
979
D
998

7 The smallest of the fractions among 5/8, $$\frac{3}{4}$$, 13/16, 7/12 is ___:

A
5/8
B
$$\frac{3}{4}$$
C
13/16
D
7/12

8 The least number that must be subtracted from 202 to make it a perfect square is:

A
10
B
8
C
14
D
6

9 A number consists of two digit's. If the digit's interchange places and the new number is added to the original number, then the resulting number will be divisible by:

A
3
B
5
C
9
D
11

10 The sum and product of two numbers are 12 and 35 respectively. The sum of their reciprocals will be :

A
$$\frac{12}{35}$$
B
$$\frac{1}{35}$$
C
$$\frac{35}{8}$$
D
$$\frac{7}{32}$$